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HortNET
Mike Reding & Betsy Anderson
Hariet Hinz & Ester Gerber
K. George Beck & James Sebastian
Mark Schwarzlander & Patrick Hafliger
Aref Abdul-Baki
Jean-François Abgrall
Lawrence Abrahamson
Karen Ackles
Daniel Adam
David Adams
Wayne Adkins
Erick Ahlbrandt
Jana Albers
Doug Allan
Gillian Allard
W.R. Allen
Doug Allen
James R. Allison
David T. Almquist
Juan Manuel Alvarez
Ketan . Jeram Amarshi
Lisa Ames
G.D. Amman
Piero Amorati
James W. Amrine Jr.
Robert L. Anderson
Roger Anderson
Lloyd Andres
Clifford Andrews
S.A. Andrews
S.R. Andrews
Ethan Angell
Lisa Anness
Bill Antrobius
USDA Forest Service - Alaska Archive
USDA Forest Service Archive
USDA APHIS PPQ Archive
USDA Forest Service - Arkansas Archive
Minnesota Department of Natural Resources Archive
Division of Plant Industry Archive
USDA Forest Service - Ashville Archive
Southern Forest Insect Work Conference Archive
Texas Forest Service Archive
USDA Forest Service Archive
University of Georgia Archive
North Carolina State University Archive
USDA Forest Service Archive
USDA Forest Service - Pineville Archive
Connecticut Agricultural Experiment Station Archive
Indiana Department of Natural Resources Archive
USDA ARS Archive
Texas Agricultural Extension Service Archive
Mississippi State University Archive
Montana State University Archive
CABI Biosciences Archive
USDA Forest Service - Region 4 Archive
Georgia Forestry Commission Archive
Center for Disease Control Archive
Washington State University Archive
USDI BLM Archive
Agriculture and Agri-Food Canada Archive
USDA NRCS Archive
USDA Forest Service Archive
USDA Forest Service - Rocky Mountain Region Archive
Anatomy Department Archive
Louisiana State University Archive
Auburn University Archive
U.S. Geological Survey Archive
Warner Park Nature Center Archive
USDA Forest Service Archive
USDA APHIS PPQ Archive
USDA APHIS PPQ Archive
USDA APHIS PPQ Archive
The Nature Conservancy Archive
USDA Forest Service - Region 8 Archive
Canadian Forest Service Archive
University of Idaho Archive
Nez Perce BioControl Center Archive
Stephen F. Austin State University Archive
Landesforstpräsidium Sachsen Archive
Central Science Laboratory, Harpenden Archive
Plant Protection Service Archive
Agriculture Canada, Ottawa Archive
Biolog. Bundesans., Inst. f. Pflanzenschutz im Weinbau Archive
Forestry Canada, Ottawa Archive
Biologische Bundesanstalt für Land- und Forstwirtschaft Archive
Heinz USA Archive
Università di Bologna Archive
University of Illinois at Urbana-Champaign Archive
The William and Lynda Steere Herbarium of The New York Botanical Garden Archive
American Phytopathological Society Archive
International Potato Center Archive
Cornell University Archive
ENSA-Montpellier Archive
UK Forestry Commission Archive
INRA-Angers Archive
INRA-Antibes Archive
INRA-Bordeaux Archive
INRA-Versailles Archive
Institut Technique de la Betterave Archive
Ministry of Agriculture and Regional Development Archive
Ministry of Agricuilture and Rural Affairs Archive
Ministry of Agriculture and Food Production Archive
Mount Albert Research Centre Archive
European and Mediterranean Plant Protection Organization Archive
Volcani Center Archive
USDA ARS Archive
University of New South Wales Archive
University of Florida Archive
Università di Napoli Archive
State Plant Quarantine Inspection Archive
State Plant Pathology Institute of Denmark Archive
SCRI-Dundee Archive
Agroscope FAL Reckenholz Archive
Pflanzenschutzamt Weil-am-Rhein Archives Archive
Pflanzenschutzamt, Hanover Archive
Osservatorio per le Malattie delle Piante Archive
The Natural History Museum, London Archive
National Wetlands Research Center Archive
Canadian Food Inspection Agency Archive
California Department of Food and Agriculture Archive
Great Smoky Mountains National Park Resource Management Archive
Michigan Department of Natural Resources Archive
Biologische Bundesanstalt für Land- und Forstwirtschaft Archive
United States National Collection of Scale Insects Photographs Archive
Central Science Laboratory Archive
University of Arkansas Forest Entomology Lab Archive
Rocky Mountain Research Station/Forest Pathology Archive
Pennsylvania Department of Conservation and Natural Resources - Forestry Archive
Trial Gardens Archive
UC Regents Archive
Utah State University Archive
USDA Forest Service - Ogden Archive
North Carolina Forest Service Archive
Montana Statewide Noxious Weed Awareness and Education Program Archive
Caulerpa Action Team Archive
University of California Archive
CSIRO Archive
Nemapix Archive
U.S. Fish and Wildlife Service Archive
Minister of Public Works and Government Services, Canada Archive
Virginia Tech Weed Identification Guide Archive
Center for Great Lakes and Aquatic Sciences Archive
USDA Forest Service - North Central Research Station Archive
USDA Forest Service - Northeastern Area Archive
International Rice Research Institute Archive
IPM Thailand Archive
UAF Cooperative Extension Archive
University of Alaska - Anchorage Archive
Landesanstalt für Pflanzenbau und Pflanzenschutz Archive
DAFF Archive
The Dow Gardens Archive
USDA Forest Service - Forest Health Protection - St. Paul Archive
University of Georgia Plant Pathology Archive
Ohio State Weed Lab Archive
National Interagency Fire Center Archive
Department of Plant Pathology Archive
Louisiana State University AgCenter Archive
University of Georgia Entomology Archive
Florida Fish and Wildlife Conservation Commission Archive
OSU Extension Slide Set Archives
Hania Arentsen
Nora Arias Loftis
Jonathan Armstrong
Kevin D. Arvin
Christopher Asaro
Jerry Asher
Thomas Atkinson
Andrea Atkinson
Mark Atwater
Dr. Augustin
Stephen Ausmus
Charles Averre
T. Azeri
Dr. Backhaus
Michael J. Bader
Ignacio Baez
Ralph D. Bagwell
John P. Bailey
Fred Baker
Jim Baker
J.R. Baker & S.B. Bambara
Yves Bancillon
K.A. Barbarick
Douglas Barbe
Larry R. Barber
Chuck Bargeron
Kenneth R. Barker
Edward L. Barnard
Barbara Barratt
Michael Barron
Patrick J. Barry
Rex Bartlett
M.E. Bartolo
Robert F. Bassett
Andrea Battisti
Olivier Baubet
Scott Bauer
Erwin and Peggy Bauer
Gary Baxter
Lorraine Beaman
Thomas Beard
K.G. Beck
David Beckman
Poul Beckmann
Peter Bedker
J. Begtrup
Elizabeth Bella
Vince Belleci
D.M. Benjamin
W.H. Bennett
Christine A. Bennett
Dayle D. Bennett
Amy Benson
Mary Benson
Joseph Berger
Chris Bergh
Wayne Berisford
Ernest C. Bernard
Gary Bernon
Jennifer Berry
L.L. Berry
F. Bertaux
Paul Bertrand
Dean Biggins
Brett Billings
Ronald F. Billings
Kathleen Bjoran
Randall Blackburn
Darren Blackford
Paul Bloomer
Bernd Blossey
Murray S. Blum
Clinton Bodine
Mike Bodle
Ted Bodner
Michael Bohne
Paul Bolstad
Andrew J. Boone
Nanna Borcherdt
Zelimir Borzan
J.M. Bové
John Shaw Boyce
William D. Boyer
George Boyhan
Steve Brack
Julieta Brambila
Keith Bramwell
Tommaso Branzanti
James Braselton
J. Brasington
Stephen Bratkovich
Sarah Braun
D. Bray
Patrick Breen
T.W. Bretz
Wayne Brewer
M.A. Brick
Allen Bridgman
Kerry Britton
Fred Brooks
Patrick H. Brose
Sonya Broughton
Alfred Brousseau
J.K. Brown
Dale Brown
Steve M. Brown
Steve L. Brown
Karen Brown
Daniel H. Brown
Leland Brown
William M. Brown Jr.
Charles T. Bryson
Charles T. and John R. Bryson
G.W. Buchleiter
Gary Buckingham
Doug Buhler
Allan Bullard
Stephen W. Bullington
LayLa Burgess
Rick Burningham
Jean Burns
Lyle Buss
Paul Butts
G.M. Buxton
James W. Byler
John D. Byrd
P.F. Byrne
Brian Cabrera
D.D. Cadahía
Steve Cade
Tony Caesar
Bob Cain
Kenneth Calcote
Cesar Calderon
R. Scott Cameron
Kim Camilli
Nancy Campbell
Faith Campbell
Christie Cantrell
Ludovic Capo-chichi
David Cappaert
John Cardina
G.E. Cardon
Scott Carlson
William A. Carothers
Jim Carpenter
Eric Carr
Gerald D. Carr
Raymond Carruthers
Richard Carter
Richard A. Casagrande
R. Cassini
Lisa Castlebury
Boris Castro
Steve Cathey
H.D. Catling
G. Caubel
Ted D. Center
Ken Chamberlain
Rae Chambers
Richard Chan
Raghavan Charudattan
A.R. Chase
Carole Cheah
Mao Chen
hong cheng
Alexander Chizhov
Paul M. Choate
Dong-Hwan Choe
Gary Cholwek
Leslie Chong
Patricia M. Ciesla
William M. Ciesla
Carina J. Cilliers
Wayne E. Clark
Dell O. Clark
Jack Kelly Clark
Dan Clark
Steve Clarke
M. Clerjeau
B.R. Coad
Cathy Cochran
Alfred Cofrancesco
Allen Cohen
Nancy Coile
V. Rodney Coleman
Tom Coleman
David Conklin
John Connett
Michael D. Connor
Bill Cook
Barry Cooke
Eric Coombs
James A. Copony
Norbert J. Cordeiro
Ed Cordell
Hugo A. Cordo
Victor Cordova
Billy Craft
Whitney Cranshaw
Johnny Crawford
Phil Crawl
Tom Creswell
R.L. Croissant
Thomas C. Croker
Mark Crosby
Gene Cross
Hansell F. Cross
Gyorgy Csoka
James P. Cuda
Stanley Culpepper
Terry Curtis
Art Cushman
A.D. Cushmon
Randy Cyr
Mark Czarnota
Edward Czerwinski
Nadia Da Ros
Jennifer E. Dacey
Bonnie Dalzell
R. Danka
USDA PLANTS Database
Mirza Dautbasic
Bob Davidson
J.A. Davidson
Diane Davies
Virgil Davis
Stephen Davis
J.G. Davis
Tony Davison
Eric R. Day
Rosemarie De Clerck-Floate
Lilia De Guzman
C.A. de Klerk
Gary L. DeBarr
Bob DeGross
Keith Delaplane
José Luís Delgado
Johnny N. Dell
Jack DeLoach
Thomas B. Denholm
Gregg DeNitto
Carl Dennis
Michigan Department of Agriculture
Andrew Derksen
H. Barth Dessau
Steve Dewey
Jerald E. Dewey
David Dickens
Lester E. Dickens
D.W. Dickson
Lew Diehl
Leslie Dietz
Christina DiFonzo
Nick Dimmock
Vladimir Dinets
Jian-qing Ding
Carol DiSalvo
Joseph M. DiTomaso
Wayne N. Dixon
Kevin Dodds
Claudia Dolinski
John W. Dooley
Oscar Dooling
G. Keith Douce
Clyde Dowler
Adam Downing
Dr. Iren Siller and Dr. Gabor Turcsanyi
Pavel Draboturin
Arnold T. Drooz
Donald Duerr
William D. Duffie Jr.
H.R. Duke
Mary Duke
Harry Duncan
Faith Duncan
J. Dunez
Ruben Durán
Willey Durden
James D. Dutcher
L.D. Dwinell
Mike Dyche
Jack Dykinga
Robert Dzwonkowski
Emily Earp
Bernard H. Ebel
M. Boyd Edwards
Donnie Edwards
GB Edwards
Andris Eglitis
Jonathan D. Eisenback
David Eitzen
Thomas Elias
James D. Ellis
Susan Ellis
H C Ellis
Donna R. Ellis
Susan Ellis
Thomas Ellis, Jr.
Link Elmore
Gerhard Elsner
Lee Emery
Eric Engbretson
Kevin Enge
Terry English
Robert Eplee
A. Eppler
Eric Erbe
Norm Erickson
USDA ARS European Biological Control Laboratory
Chris Evans
Wendy VanDyk Evans
Troy Evans
H.C. Evans
Howard Ensign Evans
John W. Everest
James Everitt
Wilson Faircloth
Mary Ann Fajvan
Bob Farrah
Carl W. Fatzinger
Heather Faubert
Brian Ferguson
Amy Ferriter
Jody Fetzer
Biological Control of Weeds in the West Field Guide
Fred Fishel
William K. Fitt
Barry Fitzgerald
R. Flores
Joel Floyd
Alan Flynn
Rob Flynn
J.C. Follin
Mark Folsom
John L. Foltz
Mark Fontaine
Beat Forster
Suzanne Foster
Alison Fox
Mandy Frake
Nancy Fraley
G.D. Franc
Felix Francis
Cheryl E. Frank
Michael Frank
Bob Frank
Bernard Fransen
C.A. Frazier
Reid Frederick
Barry Freeman
D. W. French
Frank E French
Mark Frey
Bruce Fritz
M.H. Frost
Malcolm Furniss
G. Siscaro and G. Mazzeo
Kenneth M. Gale
Bill Gallup
Reyes Garcia III
Dr. Lynn Clark and Anna Gardner
Jean-François Garsault
Jason Gatch
George Gate
Brian Geils
John H. Ghent
Kenneth E. Gibson
Jerry Gibson
Anne W. Gideon
Mark Gilkey
Raymond Gill
L.S. Gill
Nancy Gillette
Linnea Gillman
L. Giunchedi
Dean Gjerstad
B.J. Goates
John Godbee
Bill Godfrey
Donald J. Goheen
Temel Gokturk
Lizbeth Gonzalez
Shawn Good
John Goolsby
Elizabeth Goulet
Svetlana Y. Gouli
Fudd Graham
Darbie Granberry
Jean-Paul Grandjean
Alan Grant
Tom Gray
Connie Gray
Peggy Greb
Meg Green
Debbie Greene
Nancy Gregory
Jenn Grieser
R. Grimm
Beth Grobbelaar
K. Groope
Donald M. Grosman
H. Gross
Tertia Grové
Alan Guile
W.C. Guy
John Guyon
Antoine Guyonnet
J. Guyot
Robert A. Haack
Dale Habeck
Ken Hackman
Aaron Hager
Susan K. Hagle
Brad Haire
Jad Haldman
Frank A. Hale
Timothy Haley
Tom Hall
David Hall
William T. Haller
Ron Halstead
R.L. Hamblen
Roger Hammer
Bonsak Hammeraas
Richard S. Hammerschlag
R.A. Hammon
John Hammond
Perry Hampson
Brett Hampton
Richard W. Hansen
Mary Ann Hansen
James B. Hanson
Juliana M. Harding
Ken L S Harley
Bonnie Harper-Lore
Peter Harris
Jeffrey Harris
Paul Harris
Mary Ellen (Mel) Harte
Rusty Haskell
Steve Hatch
Dennis Haugen
Linda Haugen
Dennis Haugen
Lynn Jones and Nathan Havill
Frank Hawksworth
Tim Haye
Evelyn Healy
Robert Hedburg
Martin Heffer
Esmat M. Hegazi
Iman Heijboer
Dieter Heinicke
John S. Heiss
E. Hellmers
Rosa Henderson
James Henderson
Joe Hennen
Paul E. Hennon
Ames Herbert
C.W. Herbert
Don Herbison-Evans
Daniel Herms
Catherine Herms
Jose Hernandez
Gerard D. Hertel
Tom Heutte
Bradley Higbee
Stephen D. Hight
Diane Hildebrand
Martin P. Hill
Josh Hillman
Thomas E. Hinds
Nancy Hinkle
Tom Hlavaty
Mark S. Hoddle
John D. Hodges
C.L. Hodges
E. Richard Hoebeke
William H. Hoffard
James Hoffman
J.H. Hofmeyr
Russ Hogan
Christopher Hogger
M. Holderness
Dave Holland
John and Karen Hollingsworth
Gerald Holmes
Edward H. Holsten
Fred Honing
Scott Horn
Chris Horne
Steve Horsley
F.W. Howard
James O. Howell
Boris Hrasovec
Fred Hrusa
George Hudler
Will Hudson
Jiri Hulcr
Billy Humphries
Lauren Humphries
Steve Hurst
R.S. Hussey
Lacy L. Hyche
N.A. Irlbeck
Alan Isler
Jeffrey J. Jackson
Ben Jackson
William Jacobi
Dr. Reuven Jacobsohn
Robert L. James
K.B. Jamieson
J.D. Janse
Leo Janssen
James H. Jarratt
Dr W. Jelkman
Doug Jensen
Richard Jernigan
Wood Johnson
Kris Johnson
James Johnson
J. Johnson
David W. Johnson
Norm Johnson
G.R. Johnson
Robert L. Johnson
David Jones
A.T. Jones
P. Jones
Ron Jones
R.K. Jones
Francis Gwyn Jones
Michael Jordan
Carl Jorgensen
David Jude
Mic Julien
Thomas Jung
Maja Jurc
Albert Kais
Stacy Kanan
Michael Kangas
Joseph Kanner
Keith Kanoti
Petr Kapitola
J. Kim Kaplan
Lee Karney
David Karp
Jaacov Katan
Steven Katovich
Bruce W. Kauffman
H.K. Kaya
John D. Kegg
Sandy Kegley
H.L. Keil
Ronald S. Kelley
Daniel J. Kepich
Shirley Kerr
Roger S Key
Julie Kikkert
Ian Kimber
Alan Kimber
James Kimmey
Troy Kimoto
Stanislaw Kinelski
Natalia Kirichenko
Susan Kirk
Paula Klasmer
Bill Klein
M.G. Klein
Kier D. Klepzig
Kenneth H. Knauer
Lee Knepp
Milos Knizek
Ollie Knott
Allen E. Knutson
M. Koizumi
Loke T. Kok
Tarah Kolb
Luboš R. Kolouch
Takumasa Kondo
John Kraus
Bradley Kriekhaus
John Kucharski
Rosa Kugler
Andrej Kunca
Brian Kunkel
Sasa Kunovac
Jim Kunstman
L. Kunze
H.F. L.E.Dickens
R. Lafon
Joseph LaForest
Eric LaGasa
Ferenc Lakatos
Leonard L. Lake
Ashley Lamb
William Lambert
David R. Lance
Thomas D. "Tom" Landis
Doug Landis
Howard F. Schwartz & Jillian M. Lang
Keith Langdon
W.H. Lange
Ken A. Langeland
David B. Langston
H.J. Larsen
Ronald Laubenstein
Dwight K. Lauer
Tom Laurent
Kenneth R. Law
Ricky Layson
Blake Layton
Laura Lazarus
Greg Leach
David Leatherman
H. Lecoq
Linda Lee
Jeremy Lee
Dewey Lee
Philippe Legrand
Rayanne Lehman
Stacey Leicht
Theodor D. Leininger
Hannes Lemme
Gerald J. Lenhard
Brian Lenihan
Sally Leong
Bob Lepak
Stephen Lew
Sthephen A. Lewis
Pest and Diseases Image Library
François Lieutier
Larry Line
Jan Liska
Shawn Liston
Jeff Littlefield
Houping Liu
William Livingston
Ladd Livingston
Brian Lockhart
Chris Lockhart
I. Blakey Lockman
Karen Loeffelman
Kent Loeffler
Patrick Loes
Nancy Loewenstein
Ron Long
James N. Long
Lloyd Loope
Roger Lopez-Chaves
Peter L. Lorio, Jr.
Jeffrey W. Lotz
J. Louvet
Daniela Lupastean
Janice Lynch
Suzanne Lyon
Flora MacColl
Martin MAcKenzie
Alison Mackey
Daniel K. MacKinnon
Doug Maguire
A.C. Magyarosy
R.B. Malek
Claude-Bernard Malphettes
Alex Mangini
A. Mani
Edward L. Manigault
W. Robert Maple
G. Marchoux
Teresa Mardis
Sam Markell
George Markham
George Markin
L. M. Marsh
Garland N. Mason
Rich Mason
Robert Masters
Mike Matheron
Kevin Mathias
Robert W. Matthews
Francis Maugard
Gordon Maupin
Albert (Bud) Mayfield
Ross Mayhew
Greg Mazur
Paolo Mazzei
G. Mazzeo
U. Mazzucchi
Tom McAvoy
Tim McCabe
Sean McCann
Joseph McCauley
Alec McClay
David McClenaghan
Mark McClure
Michael McClure
David McComb
Cheryl McCormick
Janet S. McCulloch
Philip McDonald
S.K. McDonald
James McGraw
Mark McGregor
Eddie McGriff
Suzan McIntyre
David R. McKay
Steve McKeand
Sturgis McKeever
Martin McKenzie
Howard F. Schwartz & Mark S. McMillan
Mark McMillan
Bob McMurry
Hank McNeal
Mark McNeill
Robert M. McPherson
Julio Medal
James R. Meeker
Leslie J. Mehrhoff
Rebecca A. Melanson
Michael Mengak
Lamar Merck
Edward P. Merkel
Laura Merrill
Clair Merrit
T.W. Mew
Dale E. Meyerdirk
Hector Mialma
J.P. Michaud
Christian Michel
Jim Midcap
Manfred Mielke
Joel E. Miles
Laurence I. Miller
Debbie Miller
Anne Miller
Dan Miller
James H. Miller
Arthur E. Miller
D.R. Miller
Alan Mills
E.A. Milus
Fred Minderman
Carey Minteer
Paul A. Mistretta
David M. Moehring
Michael Moerkerk
S. K. Mohan
David Mohn
Bruce Moltzan
Michael Montgomery
J. Michael Moore
Cheryl Moorehead
David J. Moorhead
David Mooter
Dean Morewood
R.C. Morris
Caleb L. Morris
G. Morvan
John Moser
Martin Moses
John J. Mosesso
J. Jeffrey Mullahey
A. Steven Munson
Tim Murphy
Bill Murray
Ann Murray
Louis-Michel Nageleisen
David Nance
William Napier
Fred Nation
L. Navarro
Keith Naylor
Gino Nearns
Bruce Neill
Eugene E. Nelson
Stefan Neser
Scott NeSmith
Dragan Nestorovic
Leonard Newell
A.A. Newton
David Nicholls
Carol J Nichols
Tom Nichols
Gary Nichols
Robert Nichols
David G. Nielsen
Jamie Nielsen
Gene Nieminen
John Nienaber
April Noble
Jack C. Nord
Rebecca Norris
Bob Nowierski
M. Nuorteva
Victoria Nuzzo
Bob Oakes
J. O'Bannon
Lori Oberhofer
I.G. (Hardi) Oberholzer
Joseph O'Brien
Jim Occi
Ohio State Univ Ohio Ag. research & Development Center
Faith Oi
Richard Old
Forrest L. Oliveria
Max Ollieu
Charles Olsen
Annette Olson
Sharon Omahen
Merle Shepard, Gerald R.Carner, and P.A.C Ooi
Mike Ostry
Russ Ottens
Dave Overholser
Haruta Ovidiu
Donald Owen
C. Paetel
Doug Page
Zhihong Pan
Alberto Pantoja
C. Papp
Rita Parkins
David Parsons
Katherine Parys
Herbert A. "Joe" Pase III
D.G. Passmore
Steve Passoa
J.K. Pataky
Wendy Patrick
Ida Paul
Gary A. Payne
Jerry A. Payne
Paul H. Peacher
Frank Peairs
Michelle Peake
Gary Peeples
Giuseppina Pellizzari
Bodie Pennisi
Walter Peraza Padilla
Brian Perchtel
Eduardo Pereira
Tony Pernas
Milan Pernek
G. Perrotta
Vitezslava Peskova
Greig Peters
G.A. Peterson
R.S. Peterson
Vladimir Petko
Toby Petrice
Andrew Petrie
Jeff Pettis
Todd Pfeiffer
Devon Pfeiffer
Steve Pfiffer
USDA ARS Photo Unit
L.S. Pickard
Christopher Pierce
Herb Pilcher
Gifford Pinchot
Mike Pingleton
Jean Pinon
Bobby Pinto
Gary L. Piper
A.R. Pittaway
Jim Plaskowitz
Charles D. Pless
Veli Pohjonen
Margaret Pooler
Alex Popovkin
Sanford D. Porter
Jeff Portwood
Mat Pound
Dave Powell
H. Powers
Paul D. Pratt
Harry Pratt
James Preacher
Brian Prechtel
W.H. Prestele
Jessica Price
Terry Price
John Pronos
Marianne Prue
P.G. Psallidas
Alexander Purcell
Alex. H. Purcell
Dan Pusey
Vicky Quick
J.S. Quick
Bob Rabaglia
David W. Ragsdale
Dan Rahn
Bernard J. Raimo
P.M.J. Ramakers
Victor Ramey
Taran Rampersad
Craig Ramsey
Carol Bell Randall
John M. Randall
Johnny Randall
Jack Ranney
Michael Rasy
Duane Raver
Min B. Rayamajhi
G. Reboux
Perry Rech
Bill Ree
Jack T. Reed
Norman E. Rees
Jacques Regad
Don Registor
Laurie Reid
Forest Research
Rusty Rhea
Byron Rhodes
Barry Rice
Robert D. Richard
Bob Richard
Amy Richard
Robert J. Richardson
Donna Richardson
Robert Richardson
James A. Richmond
David Riley
Frank M. Riley, Jr.
Kristen Riolo
Lance S. Risley
D. Ritchie
Carole Ritchie
Dr. Shabbir Rizvi
Gabriele & Hermann Robels
J.D. Roberts
Phillip Roberts
Scott Roberts
C.E. Taylor and W.M. Robertson
Stéphan Robichaud
Scott Robinson
Mark Robinson
Laird Robinson
David G. Robinson
Wilfredo Robles
Cindy Roche
Gordon Rodda
Carmen Rodriguez
Van Waters and Rogers
Donald F. Rogers
Laura Rogers
James Rollins
Mitchell Roof
Peter Room
Sara Rosenthal
Dana Rowe
Arpita Roy
John Ruberson
Peter A. Rush
Howard Russell
Philip Rusted
Victor Ryabincov
Rich Sabulsky
W.E. Sackston
Eli Sagor
François-Xavier Saintonge
Jan Samanek
Casey Sanders
Tarique Sani
Victor Sarto i Monteys
J.N. Sasser
Christopher J. Saunders
James A. Saunders
R.F. Scharpf
Rudi Scheffrahn
Rudolf H. Scheffrahn
James Schepers
Julia Scher
R. Scherbaum
Arthur L. Schipper
Chris Schnepf
Mike Schomaker
S. Schooler
D. Schotzko
Timothy Schubert
Dave Schultz
Richard R. Schulze
E.I. Schutt
John W. Schwandt
Howard F. Schwartz
Mark Schwarzlaender
F.C. Schweissing
M Scott
David Seerveld
Leslie Seiger
John R. Seiler
Mark Sengelmann
Maresha Seusy
Michael Seymour
Shiva Shankar
O.P. Sharma
Richard Shaw
Michael Shephard
Craig Sheppard
Jijing Song and Juan Shi
Juan Shi
Jody Shimp
Clive Shirley
Clinton Shock
Floyd W. Shockley
David P. Shorthouse
William (Bill) Shuster
Kristina Simms
Ray Simons
Wayne A. Sinclair
Sharlene E. Sing
R.P. Singh
Paul E. Skelley
Britt Slattery
Clemson University - USDA Cooperative Extension Slide Series
R.J. Reynolds Tobacco Company Slide Set
Tracey Slotta
Georgette Smith
James Smith
Richard Smith
James W. Smith
Ronald Smith
Bruce Smith
Tony Smith
tia smith
Ian F. Smith
Michael T. Smith
Richard Smith
Robert N. Smith
Heidi Snell
Wendell Snow
Skip Snow
Jae-Cheon Sohn
James Solomon
Robert A. Sommers
Stephanie Sopow
Bruce Sorrie
Lynn Sosnoskie
Jeanine Soter
Frantisek Soukup
Dennis J. Souto
Jim Space
Beverly Sparks
Alton N. Sparks, Jr.
Neal Spencer
Terry Spivey
Terry L Spivey
Richard Sprenkel
Richard Spriggs
Lakshmi Sridharan
Petr Srutka
R. Stace-Smith
Jeff Stachler
Walter Stahel
John M. Staley
John Stanley
Jason D. Stanley
Forest & Kim Starr
R.G. Steadman
Brytten Steed
Steven Steele
Allen C. Steere
Chris Steiner
Peter Stephen
David Stephens
Fabio Stergulc
R.E. Stevens
Scott Stewart
Robert Stewart
Cathy Stewart
Jim Stimmel
Gary M. Stolz
John Stommel
Doug Stone
Malcolm Storey
Jim Story
Ronald Stroessner
Massimo Stroppa
Connie Strunk
Kurt Stueber
Brian Sugarman
Daniel R. Suiter
Brian Sullivan
N. Wortson Summer
Ivan Sutila
Jil M. Swearingen
Jon Sweeney
Curtis Swift
Csaba Szaboky
Nava Tabak
P.W. Talboys
Janco Tanis
Les Tanner
A.L. Taylor
Kevin Taylor
Jane Taylor
Dennis Teague
Louis Tedders
David Teem
Dan Tenaglia
Lisa Tewksbury
Robert C. Thatcher
Michael C. Thomas
Paul Thomas
Holly Thornton
Howard Thresher
Tim Tigner
Borys M. Tkacz
Barbara Tokarska-Guzik
John R. Tolliver
Marylin Tomkins
J. Tomminen
Susan Trammell
Kristine Travis
John Triana
H.H. Triantaphyllou
Ian Trueman
Mandy Tu
Sally Tucker
Scott Tunnock
Richard Turcotte
Susan Turner
Charles Turner
Beverly Turner
J.J. Tuset
A.J. Ullstrup
Photographer Unknown
USDA-ARS
Erich G. Vallery
M.A. van den Berg
A. van Frankenhuijzen
Andrea Van Loan
S.P. van Vuuren
Jacob Vance
Jeff Vanuga
Tim Varnedore
K. Venn
Didier Vincenot
Joy Viola
Alfred Viola
Ferenc Viranyi
David Voegtlin
Theirry Vrain
Dale Wade
Art Wagner
Warren L. Wagner
Art Wagner
E. Bradford Walker
D.G. Walkey
V.R. Wallen
J.W. Walters
Jim Walters
Angela Walther
Roger Ward
James Denny Ward
Debbie Waters
A. Burns Weathersby
Biological Control: A Guide of Natural Enemies of North America Web Site
Steve Webb
Richard Webb
Theodore Webster
Ron Weeks
Dr. Weidemann
John A. Weidhass
Keith Weller
Lenny Wells
Rohan Wells
J.C. Wells
Jamie Welsh
R. Werner
Darrell Wesenberg
Rick West
Michael West
Randy Westbrooks
Paul Weston
Phil Westra
Gerald Wheeler
William White
Anthony D. White
Marisa Williams
Karen Williams
David Williams
Ralph Williams
Ralph Williams
John A. Williams
Max Williamson
Wayne Williamson
Jean L. Williams-Woodward
Linda Wilson
Jill Wilson
Dave Wilson
Doug Wilson
Jeffrey Wilson
Susan Wineriter
Peter Wirtz
Billy R. Wiseman
Robert F. Wittwer
Gil Wojciech
Daniel Wojcik
Herb Womack
Roy Wood
Rachel Woodfield
Paul Wray
Natasha Wright
John Wrigley
Yun Wu
Bart Wursten
UConn Plant Database www.hort.uconn.edu/plants
John Yablonsky
Camilla B. Yandoc
Yuri Yashin
Harry O. Yates III
Carroll E. Younce
R. Zachmann
Gary R. Zahm
Nicolina Zambone
Shep Zedaker
Gabriella Zilahi-Balogh
W.G. Ziller
Roberta Zimmerman
Milan Zubrik
Ulrich Zunke
Subject Search:
Select One
(Cercospora magnoliae)
(Dibotryon morbosum)
American crow (Corvus brachyrhynchos)
pincushion (Chaenactis spp.)
'Akepa (Loxops coccineus)
'Apapane (Himatione sanguinea)
'Elepaio (Chasiempis sandwichensis)
'I'iwi (Vestiaria coccinea)
'ohi'a lehua (Metrosideros polymorpha)
'Oma'o (Myadestes obscurus)
*trees
2007 Georgia wildfires
Aaron's beard (Hypericum calycinum)
Abbott's sawfly (Neodiprion abbottii)
Abbott's sphinx (Sphecodina abbottii)
abortive Entoloma (Entoloma abortivum)
absinth wormwood (Artemisia absinthium)
abstruse false looper (Syngrapha abstrusa)
Abyssinian ground hornbill (Bucorvus abyssinicus)
acacia (Acacia spp.)
acacia-ants (Pseudomyrmex ferrugineus)
Acantholyda sawflies (Acantholyda spp.)
achemon sphinx (Eumorpha achemon)
acorn and nut weevils (Curculio spp.)
acorn jay (Garrulus glandarius)
acorn weevil (Curculio nucum)
acorn-plum gall (Amphibolips quercusjuglans)
Acrolepia moths (Acrolepia spp.)
acuminate brachythecium moss (Brachythecium acuminatum)
acuminate scale (Kilifia acuminata)
adana tip moth (Rhyacionia adana)
addersmeat (Stellaria holostea)
adelgid (Dreyfusia nordmannianae)
adelgid (Dreyfusia merkeri)
adelgid (Adelges viridis)
admes spider mite (Eurytetranychus admes)
aerial yellowjacket (Dolichovespula arenaria)
Africa
African black rhinoceros (Diceros bicornis)
African boxthorn (Lycium ferrocissimum)
African broadbill (Smithornis capensis)
African Elephant (Loxodonta africana)
African feathergrass (Pennisetum macrourum)
African goshawk (Accipiter tachiro)
African ground hornbill (Bucorvus leadbeateri)
African hill babbler (Pseudoalcippe abyssinica)
African jewelfish (Hemichromis letourneuxi)
African juniper (Juniperus procera)
African Land Snail (Archachatina degneri)
African Land Snail (Achatina glutinosa)
African Land Snail (Achatina albopicta)
African Land Snail (Archachatina marginata)
African Land Snail (Archachatina marginata)
African Land Snail (Archachatina puylaepti)
African Land Snail (Achatina reticulata)
African Land Snail (Achatina panthera)
African Land Snail (Achatina varicosa)
African oil palm (Elaeis guineensis)
African paradise flycatcher (Terpsiphone viridis)
African penguin (Spheniscus demersus)
African redhead agama (Agama agama)
African rue (Peganum harmala)
African tortoise tick (Amblyomma marmoreum)
African tuliptree (Spathodea campanulata)
African violet (Saintpaulia spp.)
African violet (Saintpaulia teitensis)
African white rhinoceros (Ceratotherium simum)
African wild dog (Lycaon pictus)
Africanized honey bee (Apis mellifera)
agave (Agave spp.)
Agelenid spider
agreeable tiger moth (Spilosoma congrua)
ailanthus webworm (Atteva punctella)
air pollutants
air potato (Dioscorea bulbifera)
airplant (Tillandsia spp.)
Akanthomyces fungus (Akanthomyces spp.)
Alabama croton (Croton alabamensis)
Alabama larkspur (Delphinium alabamicum)
Alabama skipper (Euphyes dion)
Alabama supplejack (Berchemia scandens)
alang-alang gall midge (Orseolia javonica)
Alaska-cedar (Chamaecyparis nootkatensis)
albino land snail (Achatina iredalei)
albopicta scale (Acutaspis albopicta)
alder (Alnus spp.)
alder flea beetle (Altica ambiens)
alder leaf beetle (Agelastica alni)
alder leaf beetle (Agelastica alni)
alder moth (Acronicta alni)
alder scalycap (Pholiota alnicola)
alderleaf mountain mahogany (Cercocarpus montanus)
aleppo pine (Pinus halepensis)
Aleurodiscus cankers (Aleurodiscus spp.)
alewife (Alosa pseudoharengus)
Alexid beetle (Sphaerosoma reitteri)
Alexid beetle (Sphaerosoma sturanyi)
Alexid beetle (Sphaerosoma pubescens)
Alexid beetle (Sphaerosoma globosum)
Alexid beetle (Sphaerosoma vallambrosae)
Alexid beetle (Sphaerosoma globosum)
Alexid beetle (Sphaerosoma hemisphaericum)
Alexid beetle (Sphaerosoma maritimum)
Alexid beetle (Sphaerosoma alutaceum)
Alexid beetle (Sphaerosoma bosnicum)
Alexid beetle (Sphaerosoma carpathicum)
Alexid beetle (Sphaerosoma latitarse)
Alexid beetle (Sphaerosoma merditanum)
Alexid beetle (Sphaerosoma reitteri)
Alexid beetle (Sphaerosoma apuanum)
Alexid beetle (Sphaerosoma pilosum)
Alexid beetle (Sphaerosoma pilosissimum)
Alexid beetle (Sphaerosoma antennarium)
Alexid beetle (Sphaerosoma piliferum)
Alexid beetle (Sphaerosoma pilosum)
Alexid beetle (Sphaerosoma laevicolle)
Alexid beetle (Sphaerosoma winneguthi)
Alexid beetle (Sphaerosoma shardaghense)
Alexid beetle (Sphaerosoma fiorii)
Alexid beetle (Sphaerosoma corcyreum)
Alexid beetle (Sphaerosoma obsoletum)
Alexid beetle (Sphaerosoma punctatum)
Alexid beetle (Sphaerosoma seiditzi)
Alexid beetle (Sphaerosoma sublaeve)
Alexid beetle (Sphaerosoma paganetti)
Alexid beetle (Sphaerosoma reitteri)
Alexid beetle (Sphaerosoma sparsum)
Alexid beetle (Sphaerosoma solarii)
alfalfa (Medicago sativa)
alfalfa leaf spot (Pseudopeziza medicaginis)
alfalfa looper (Autographa californica)
Alfalfa Mosaic Virus (Alfamovirus AMV)
alfalfa plant bug (Adelphocoris lineolatus)
alfalfa snout beetle (Otiorhynchus ligustici)
alfalfa webworm (Loxostege cereralis)
alfalfa weevil (Hypera postica)
algal leaf spot (Cephaleuros virescens)
alkalai marsh aster (Almutaster pauciflorus)
alkalai pepperweed (Lepidium crenatum)
alkali bee (Nomia melanderi)
alkali fly (Ephydra hians)
alkali sacaton (Sporobolus airoides)
allanblackia (Allanblackia shuhlmanii)
Allegheny monkeyflower (Mimulus ringens)
Allegheny mound ant (Formica exsectoides)
Allegheny serviceberry (Amelanchier laevis)
Allegheny spurge (Pachysandra procumbens)
alley cropping
alligatorweed (Alternanthera philoxeroides)
alligatorweed flea beetle (Agasicles hygrophila)
alligatorweed moth (Arcola malloi)
alligatorweed thrips (Amynothrips andersoni)
almond (Prunus dulcis)
almond moth (Cadra cautella)
almond-leaved willow (Salix triandra)
aloe (Aloe spp.)
aloe vera aphid (Aloephagus myersi)
alpine besseya (Besseya alpina)
alpine buttercup (Ranunculus adoneus)
alpine clover (Trifolium dasyphyllum)
alpine currant (Ribes alpinum)
alpine false springparsley (Pseudocymopterus montanus)
alpine leafybract aster (Symphyotrichum foliaceum)
alpine leafybract aster (Symphyotrichum foliaceum)
alpine lewisia (Lewisia pygmaea)
alpine milkvetch (Astragalus alpinus)
alpine oreoxis (Oreoxis alpina)
alpine pennycress (Thlaspi montanum)
alpine pennycress (Thlaspi montanum)
alpine sagebrush (Artemisia scopulorum)
alpine sawsepal penstemon (Penstemon glaber)
alpine smelowskia (Smelowskia calycina)
alpine timothy (Phleum commutatum)
alpine violet (Viola labradorica)
alsike clover (Trifolium hybridum)
Alternaria blight (Alternaria tenuissima)
Alternaria blight (Alternaria dianthicola)
Alternaria blight (Alternaria dauci)
Alternaria blight (Alternaria panax)
Alternaria leaf blight (Alternaria cucumerina)
alternateleaf dogwood (Cornus alternifolia)
Amanda's pennant (Celithemis amanda)
Amanita mushroom (Amanita spp.)
amaryllis (Amaryllis spp.)
amber darter (Percina antesella)
ambrosia beetle (Trypodendron scabricollis)
ambrosia beetle (Xyleborus pubescens)
ambrosia beetle (Xyleborus horridus)
ambrosia beetle (Glochinocerus gemellus)
ambrosia beetle (Xyleborus atratus)
ambrosia beetle (Xyleborus pelliculosus)
ambrosia beetle (Euplatypus compositus)
ambrosia beetle (Corthylus detrimentosus)
ambrosia beetle (Xyleborus xylographus)
ambrosia beetle (Xyleborus affinis)
ambrosia beetle (Xyleborus volvulus)
ambrosia beetle (Euplatypus parallelus)
ambrosia beetle (Oxoplatypus quadridentatus)
ambrosia beetle (Corthylocurus aguacatensis)
ambrosia beetle (Trypodendron signatum)
ambrosia beetle (Xylosandrus germanus)
ambrosia beetle (Myoplatypus flavicornis)
ambrosia beetle (Gnathotriculus sulcatus)
ambrosia beetle (Xyleborus dryographus)
ambrosia beetle (Monarthrum fasciatus)
ambrosia beetle (Amphicranus cordatus)
ambrosia beetle (Monarthrum laterale)
ambrosia beetle (Ambrosiodmus lecontei)
ambrosia beetle (Ambrosiodmus obliquus)
ambrosia beetle (Ambrosiodmus rubricollis)
ambrosia beetle (Ambrosiodmus funereus)
ambrosia beetle (Xyleborus celsus)
ambrosia beetles (Platypus spp.)
ambrosia beetles (Corthylus spp.)
ambrosia beetles (Xylosandrus spp.)
ambrosia beetles (Tricolus spp.)
ambrosia beetles (Ambrosiodmus spp.)
ambush bug (Phymata americana)
ambush bugs (Phymata spp.)
American alligator (Alligator mississippiensis)
American alpine speedwell (Veronica wormskjoldii)
American aspen beetle (Gonioctena americana)
American avocet (Recurvirostra americana)
American badger (Taxidea taxus)
American basswood (Tilia americana)
American beautyberry (Callicarpa americana)
American beaver (Castor canadensis)
American beech (Fagus grandifolia)
American bellflower (Campanulastrum americanum)
American bison (Bison bison)
American bistort (Polygonum bistortoides)
American bittern (Botaurus lentiginosus)
American bittersweet (Celastrus scadens)
American black nightshade (Solanum americanum)
American bladdernut (Staphylea trifolia)
American buckwheat vine (Brunnichia ovata)
American burnweed (Erechtites hieraciifolia)
American carrion beetle (Necrophila americana)
American chestnut (Castanea dentata)
American climacium moss (Climacium americanum)
American climbing fern (Lygodium palmatum)
American cockroach (Periplaneta americana)
American copper (Lycaena phlaeas)
American cranberrybush (Viburnum opulus)
American dagger moth (Acronicta americana)
American dipper (Cinclus mexicanus)
American dodder (Cuscuta americana)
American dog tick (Dermacentor variabilis)
American dwarf mistletoe (Arceuthobium americanum)
American eelgrass (Vallisneria americana)
American elm (Ulmus americana)
American evergreen (Syngonium podophyllum)
American ginseng (Panax quinquefolius)
American globeflower (Trollius laxus)
American goldfinch (Carduelis tristis)
American grasshopper (Schistocerca americana)
American hawthorn rust (Gymnosporangium globosum)
American hazelnut (Corylus americana)
American holly (Ilex opaca)
American hornbeam (Carpinus caroliniana)
American horse fly (Tabanus americanus)
American house spider (Achaearanea tepidariorum)
American kestrel (Falco sparverius)
American lady (Vanessa virginiensis)
American licorice (Glycyrrhiza lepidota)
American lopseed (Phryma leptostachya)
American lotus (Nelumbo lutea)
American mink (Mustela vison)
American mountain ash (Sorbus americana)
American oil palm (Attalea butyracea)
American pasqueflower (Pulsatilla patens)
American pika (Ochotona princeps)
American plum (Prunus americana)
American plum borer (Euzophera semifuneralis)
American pokeweed (Phytolacca americana)
American red raspberry (Rubus idaeus)
American robin (Turdus migratorius)
American rockbrake (Cryptogramma acrostichoides)
American smoketree (Cotinus obovatus)
American snout butterfly (Libytheana carinenta)
American speedwell (Veronica americana)
American spider beetle (Mezium americanum)
American spongeplant (Limnobium spongia)
American squawroot (Conopholis americana)
American sycamore (Platanus occidentalis)
American toad (Bufo americanus)
American trailplant (Adenocaulon bicolor)
American umbrellaleaf (Diphylleia cymosa)
American vetch (Vicia americana)
American water horehound (Lycopus americanus)
American water-willow (Justicia americana)
American white pelican (Pelecanus erythrorhynchos)
American white waterlily (Nymphaea odorata)
American widgeon (Anas americana)
American wisteria (Wisteria frutescens)
American woodcock (Scolopax minor)
American yellowrocket (Barbarea orthoceras)
amphipod (Hyalella azteca)
Amur chokecherry (Prunus maackii)
Amur corktree (Phellodendron amurense)
Amur honeysuckle (Lonicera maackii)
Amur maple (Acer ginnala)
Amur peppervine (Ampelopsis brevipedunculata)
Amur privet (Ligustrum amurense)
Amylostereum rot (Amylostereum areolatum)
Anacamptodon moss (Anacamptodon splachnoides)
anchor stink bug (Stiretrus anchorago)
anchored waterhyacinth (Eichhornia azurea)
Andean Potato Latent Virus (Tymovirus APLV)
Andean potato weevil (Premnotrypes vorax)
Andean potato weevil (Premnotrypes suturicallus)
Andes Mountains
Andrenid bee (Andrena maderensis)
Andrenid bee (Andrena wollastoni)
Andrenid bees
Andrenid bees (Andrena spp.)
angel tern (Gygis alba)
angel's trumpet (Datura innoxia)
Angoumois grain moth (Sitotroga cerealella)
angular leaf spot (Xanthomonas fragariae)
angular leaf spot of cotton (Xanthomonas campestris)
angular leaf spot of cucumber (Pseudomonas syringae)
angulat Solomon's seal (Polygonatum odoratum)
angulated cutworm (Syngrapha rectangula)
angulose prominent (Peridea angulosa)
anhinga (Anhinga anhinga)
animated oat (Avena sterilis)
anisescented goldenrod (Solidago odora)
annosum root disease (Heterobasidion annosum)
annual bluegrass (Poa annua)
annual canarygrass (Phalaris canariensis)
annual marshelder (Iva annua)
annual rabbitsfoot grass (Polypogon monspeliensis)
annual ragweed (Ambrosia artemisiifolia)
annual ragweed (Ambrosia artemisiifolia)
annual vernalgrass (Anthoxanthum aristatum)
annual wildrice (Zizania aquatica)
anole (Anolis spp.)
anomodon moss (Anomodon rostratus)
ant (Lasius fuliginosus)
ant (Tetramorium simillimum)
ant (Cardiocondyla venustula)
ant (Odontomachus spp.)
Antarctic beech (Nothofagus antarctica)
antelope bitterbrush (Purshia tridentata)
Anthocorid bug (Scoloposcelis flavicornis)
Anthomyiid flies (Delia spp.)
Anthony's riversnail (Athearnia anthonyi)
anthracnose (Colletotrichum coccodes)
anthracnose (Gnomonia spp.)
anthracnose (Apiognomonia spp.)
anthracnose (Colletotrichum nicotianae)
anthracnose (Glomerella lagenaria)
anthracnose (Colletotrichum truncatum)
anthracnose (Apiognomonia quercina)
anthracnose (Colletotrichum acutatum)
anthracnose (Colletotrichum spp.)
anthracnose (Colletotrichum graminicola)
anthracnose (Colletotrichum fragariae)
Anthracnose, pink boll rot or seedling blight of cotton (Colletotrichum gossypii)
antlion
antlions (Myrmeleon spp.)
antlions (Brachynemurus spp.)
ants
ants (Lasius spp.)
ants (Polyrhachis spp.)
ants (Formica spp.)
ants, bees, sawflies, wasps, and allies
Apache plume (Fallugia paradoxa)
aphid (Acyrthosiphon lactucae)
aphid (Eriosoma lanuginosa)
aphid (Lachnus roboris)
aphid (Uroleucon ambrosiae)
aphid (Tetraneura ulmi)
aphid (Pemphigus populi)
aphid (Aphis lutescens)
aphid (Pemphigus spyrothecae)
aphid parasite (Aphelinus spp.)
aphids
aphids, leafhoppers, planthoppers, scale insects and allies
Appalachian barren strawberry (Waldsteinia fragarioides)
Appalachian eyed brown (Satyrodes appalachia)
Appalachian mixed hardwoods
Appalachian monkeyface (Quadrula sparsa)
Appalachian violet (Viola appalachiensis)
apple (Malus domestica)
apple and crabapple (Malus spp.)
apple aphid (Aphis pomi)
apple blossom weevil (Anthonomus pomorum)
apple ermine moth (Yponomeuta malinellus)
apple flea beetle (Altica foliaceae)
apple fruit moth (Argyresthia conjugella)
apple leaf miner (Lyonetia clerkella)
apple maggot (Rhagoletis pomonella)
Apple Mosaic Virus (Ilarvirus ApMV)
apple of Peru (Nicandra physalodes)
apple pith moth (Blastodacna atra)
apple proliferation phytoplasma (Phytoplasma AP-MLO)
apple scab (Venturia inaequalis)
apple serviceberry (Amelanchier x grandiflora)
apple tortrix (Archips fuscocupreanus)
apple wood stainer (Monarthrum mali)
appleleaf blistergalls (Eriophyes mali)
appleleaf-curling moth (Adoxophyes privatana)
apricot (Prunus armeniaca)
apricot chlorotic leafroll (Phytoplasma N/A)
arabesque orbweaver (Neoscona arabesca)
Arabis Mosaic Virus (Nepovirus ArMV)
Aradid bugs (Aradus spp.)
araucaria mealybug (Eriococcus araucariae)
arboreal ant (Crematogaster ashmeadi)
arborvitae (Thuja spp.)
Arborvitae Japanese weevil (Brachyderes incanus)
arborvitae leafminer (Argyresthia thuiella)
arborvitae spider mite (Platytetranychus thujae)
arborvitae weevil (Phyllobius intrusus)
arctic alpine forget-me-not (Eritrichium aretioides)
arctic alpine forget-me-not (Eritrichium nanum)
arctic bellflower (Campanula uniflora)
arctic pearlwort (Sagina saginoides)
arctic rush (Juncus arcticus)
arctic skipper (Carterocephalus palaemon)
arctic starflower (Trientalis europaea)
arctic tern (Sterna paradisaea)
arctic willow (Salix arctica)
arctic yellow violet (Viola biflora)
Argentine ant (Linepithema humile)
Argentine stem weevil (Listronotus bonariensis)
argos skipper (Atrytone arogos)
arid land subterranean termite (Reticulitermes tibialis)
Arizona
Arizona fescue (Festuca arizonica)
Arizona fivespined ips (Ips lecontei)
Arizona mule-ears (Wyethia arizonica)
Arizona thistle (Cirsium arizonicum)
Arkansas mannagrass (Glyceria arkansana)
Armillaria root rot (Armillaria mellea)
Armillaria root rot (Armillaria tabescens)
Armillaria root rot (Armillaria limonea)
Armillaria root rot (Armillaria novae-zelandiae)
Armillaria root rot (Armillaria gallica)
Armillaria root rot (Armillaria ostoyae)
Armillaria root rots (Armillaria spp.)
armored scale (Aonidomytilus ceanothi)
armored scale (Nuculaspis californicus)
armored scale (Cupressaspis shastae)
armored scale (Lepiosaphes esakii)
armored scale (Agrallaspis pictor)
armored scale (Selenaspidus rubidus)
armored scale (Targionia yuccarum)
armored scale (Parlatoria crotonis)
armored scale (Diaspidiotus aesculi)
armored scale (Diaspis gilloglyi)
armored scale (Lopholeucaspis cockerelli)
armored scale (Rhizaspidiotus dearnessi)
armored scale (Unachionaspis tenuis)
armored scale (Opuntiaspis carinatus)
armored scale (Aonidomytilus concolor)
armored scale (Hemiberlesia diffinis)
armored scale (Chionaspis ortholobis)
armored scale (Diaspis parasiti)
armored scale (Aspidaspis arctostaphyli)
armored scale (Chrysomphalus bifasciculatus)
armored scale (Pseudoparlatoria parlatorioides)
armored scale (Opuntiaspis javanensis)
armored scale (Pallulaspis ephedrae)
armored scale (Chionaspis heterophyllae)
armored scale (Gymnaspis aechmeae)
armored scale (Melanaspis smilacis)
armored scale (Aonidiella taxus)
armored scale (Duplachionaspis exalbida)
armored scale (Parlatoria camelliae)
armored scale (Nuculaspis apacheca)
armored scale (Haliaspis spartinae)
armored scale (Chionaspis sassceri)
armored scale (Chionaspis etrusca)
armored scale (Chionaspis nyssae)
armored scale (Crenulaspidiotus dicentron)
armored scale (Paracupidaspis wilkeyi)
armored scale (Chionaspis wistariae)
armored scale (Furchadaspis zamiae)
armored scale (Melanaspis coccolobae)
armored scale (Pseudaulacaspis cockerelli)
armored scale (Diaspis dignus)
armored scale (Kuwanaspis hikosani)
armored scale (Lepidosaphes pinnaeformis)
armored scale (Lepidosaphes orsomi)
armored scale (Cupidaspis cupressi)
armored scale (Frogattiella penicillata)
armored scale (Crassaspis multipora)
armored scale (Hemigymnaspis pimentae)
armored scale (Abgrallaspis degeneratus)
armored scale (Quernaspis quercus)
armored scale (Odonaspis ruthae)
armored scale (Aonidomytilus solidaginis)
armored scale (Diaspidiotus ehrhorni)
armored scale (Abgrallaspis gliwicensis)
armored scale (Ferrisidea magna)
armored scale (Diaspis manzanitae)
armored scale (Hemigymnaspis orchidicola)
armored scale (Andaspis punicae)
armored scale (Parlatoria crypta)
armored scale (Selenaspidus albus)
armored scale (Lepidosaphes yanagicola)
armored scales (Aonidiella spp.)
armored scales (Furcaspis spp.)
armored scales (Lepidosaphes spp.)
armored scales (Chionaspis spp.)
armored scales (Odonaspis spp.)
armored scales (Abgrallaspis spp.)
armored scales (Leucaspis spp.)
armored scales (Velataspis spp.)
armored scales (Schizentaspidus spp.)
armoured scale (Aspidiella sacchari)
army cutworm (Euxoa auxiliaris)
armyworm (Spodoptera spp.)
armyworm moth (Mythimna unipuncta)
armyworms (Mythimna spp.)
arrowfeather threeawn (Aristida purpurascens)
arrowhead scale (Unaspis yanonensis)
arrowleaf balsamroot (Balsamorhiza sagittata)
arrowleaf buckwheat (Eriogonum compositum)
arrowleaf false pickerelweed (Monochoria hastata)
arrowleaf ragwort (Senecio triangularis)
arrowshaped micrathena (Micrathena sagittata)
art work
artist's conk (Ganoderma applanatum)
arumleaf arrowhead (Sagittaria cuneata)
Ascochyta blight of chickpea (Ascochyta rabiei)
Ascochyta blight of cotton (Ascochyta gossypii)
Ascochyta fungi (Ascochyta spp.)
Ascodicheana fungus (Ascodichaena rugosa)
ash (Fraxinus spp.)
ash and privet borer (Tylonotus bimaculatus)
ash anthracnose (Gnomoniella fraxini)
ash bark beetle (Hylesinus varius)
ash bark beetles (Hylesinus spp.)
ash borer (Podosesia syringae)
ash borers (Neoclytus spp.)
ash cambium miners (Phytobia spp.)
ash decline
ash flower gall mite (Eriophyes fraxiniflora)
ash heart rot (Perenniporia fraxinophila)
ash leaf spot (Mycosphaerella fraxinicola)
ash midribgall midge (Contarinia canadensis)
ash plant bug (Tropidosteptes amoenus)
ash root rot (Scytinostroma galactinum)
ash rusts (Puccinia sparganioides)
ash seed weevils (Lignyodes spp.)
ash sphinx (Manduca jasminearum)
ash yellows (Phytoplasma N/A)
ashy gray lady beetle (Olla v-nigrum)
Asian ambrosia beetle (Xyleborinus saxeseni)
Asian clam (Corbicula fluminea)
Asian cockroach (Blattella asahinai)
Asian crabgrass (Digitaria bicornis)
Asian elephant (Elephas maximus)
Asian forget-me-not (Myosotis asiatica)
Asian gypsy moth (Lymantria dispar)
Asian kelp (Undaria pinnatifida)
Asian long-horned beetle (Anoplophora glabripennis)
Asian nakedwood (Colubrina asiatica)
Asian sprangletop (Leptochloa chinensis)
Asian swamp eel (Monopterus albus)
Asian tiger mosquito (Aedes albopictus)
Asiatic dayflower (Commelina communis)
Asiatic dock (Rumex confertus)
Asiatic dogwood (Cornus officinalis)
Asiatic garden beetle (Maladera castanea)
Asiatic oak weevil (Cyrtepistomus castaneus)
Asiatic pennywort (Centella asiatica)
Asiatic rice borer (Chilo suppressalis)
asparagus (Asparagus spp.)
asparagus (Asparagus officinalis)
asparagus aphid (Brachycorynella asparagi)
asparagus beetle (Crioceris asparagi)
aspen blotchminer (Phyllonorycter tremuloidiella)
aspen carpenterworm (Acossus populi)
aspen decline
aspen fleabane (Erigeron speciosus)
aspen leafminer (Phyllocnistis populiella)
aspen leaftier (Sciaphila suplex)
aspen pea (Lathyrus leucanthus)
aspen pea (Lathyrus laetivirens)
aspen root girdler (Agrilus horni)
aspen/poplar (Populus spp.)
Aspergillus ear and kernel rot (Aspergillus flavus)
Aspergillus fungi (Aspergillus spp.)
asphodel (Asphodelus albus)
assassin bug
assassin bug (Microtomus purcis)
assassin bug (Zelus exsanguis)
assassin bug (Zelus luridus)
assassin bug (Zelus longipes)
assassin bug (Pselliopus cinctus)
assassin bugs (Sinea spinipes)
assassin bugs (Sycanus spp.)
assassin bugs (Zelus spp.)
assassin bugs (Sinea spp.)
assassin bugs (Ectrychotes spp.)
assassin bugs (Rhynocoris spp.)
Aster
aster (Aster spp.)
aster leafhopper (Macrosteles quadrilineatus)
aster yellows phytoplasma (Phytoplasma N/A)
asteroid moth (Cucullia asteroides)
asthmaweed (Conyza bonariensis)
Atamasco lily (Zephyranthes atamasca)
Athel tamarisk (Tamarix aphylla)
Atlantic canary (Serinus canaria)
Atlantic poison oak (Toxicodendron pubescens)
Atlantic white cedar (Chamaecyparis thyoides)
Atlas cedar (Cedrus atlantica)
atlas moth (Attacus atlas)
Atropellis canker (Atropellis piniphila)
Atropellis canker (Atropellis pinicola)
aulacomnium moss (Aulacomnium palustre)
Australian pine (Casuarina equisetifolia)
Australian pyralid moth (Austromusotima camptozonale)
Australian saltbush (Atriplex semibaccata)
Australian waterbuttons (Cotula australis)
Austrian draba (Draba fladnizensis)
Austrian fieldcress (Rorippa austriaca)
Austrian pine (Pinus nigra)
autumn coralroot (Corallorrhiza odontorhiza)
autumn dwarf gentian (Gentianella amarella)
autumn moth (Epirrita autumnata)
autumn olive (Elaeagnus umbellata)
avalanches
Avery Peak twinpod (Physaria alpina)
avocado (Persea americana)
avocado thrips (Scirtothrips perseae)
azalea (Rhododendron kaempferi)
azalea (Rhododendron mucronulatum)