| Photographer |
Number of Images |
| Howard F. Schwartz |
5101 |
| Mary Ellen (Mel) Harte |
3577 |
| Chris Evans |
3278 |
| Division of Plant Industry Archive |
2613 |
| Whitney Cranshaw |
2380 |
| Ohio State Weed Lab Archive |
2016 |
| Joseph O'Brien |
2007 |
| Pest and Diseases Image Library |
1940 |
| Forest & Kim Starr |
1610 |
| Dave Powell |
1533 |
| William M. Ciesla |
1506 |
| Richard Old |
1460 |
| Floyd W. Shockley |
1385 |
| The Dow Gardens Archive |
1134 |
| Lacy L. Hyche |
1092 |
| Clemson University - USDA Cooperative Extension Slide Series |
1059 |
| United States National Collection of Scale Insects Photographs Archive |
987 |
| Terry Spivey |
936 |
| David Cappaert |
901 |
| James H. Miller |
888 |
| Charles T. Bryson |
873 |
| Steve Dewey |
867 |
| Jerry A. Payne |
823 |
| Paul Bachi |
818 |
| USDA Forest Service - Ogden Archive |
807 |
| Joseph M. DiTomaso |
794 |
| Terry L Spivey |
761 |
| Pennsylvania Department of Conservation and Natural Resources - Forestry Archive |
719 |
| David J. Moorhead |
710 |
| John D. Byrd |
686 |
| Julia Scher |
617 |
| University of Georgia Plant Pathology Archive |
605 |
| Petr Kapitola |
597 |
| Robert L. Anderson |
597 |
| Richard Webb |
591 |
| Paul Wray |
556 |
| Sturgis McKeever |
519 |
| William M. Brown Jr. |
516 |
| USDA Forest Service - Region 8 Archive |
504 |
| J.R. Baker & S.B. Bambara |
490 |
| Gyorgy Csoka |
488 |
| Steven Katovich |
465 |
| Ronald F. Billings |
463 |
| Ted Bodner |
460 |
| Jan Samanek |
441 |
| Joseph LaForest |
437 |
| John Cardina |
430 |
| James Solomon |
415 |
| Gerald J. Lenhard |
404 |
| Charles Olsen |
395 |
| James Henderson |
388 |
| USDA Forest Service - Northeastern Area Archive |
385 |
| Andrej Kunca |
383 |
| Joy Viola |
379 |
| Wendy VanDyk Evans |
378 |
| USDA Forest Service - Rocky Mountain Region Archive |
359 |
| Tony Pernas |
356 |
| Natasha Wright |
346 |
| Brian Lockhart |
336 |
| Stanislaw Kinelski |
331 |
| USDA APHIS PPQ Archive |
323 |
| Frank Peairs |
318 |
| Bill Cook |
312 |
| Susan Ellis |
304 |
| Edward L. Barnard |
301 |
| Johnny N. Dell |
299 |
| Ken Chamberlain |
292 |
| Paul Bolstad |
281 |
| William Jacobi |
276 |
| USDA Forest Service - North Central Research Station Archive |
276 |
| Minnesota Department of Natural Resources Archive |
274 |
| Joseph Berger |
273 |
| R.J. Reynolds Tobacco Company Slide Set |
272 |
| Theodore Webster |
256 |
| Chris Schnepf |
244 |
| G. Keith Douce |
244 |
| Russ Ottens |
241 |
| Leslie J. Mehrhoff |
237 |
| USDA Forest Service Archive |
234 |
| Ferenc Lakatos |
228 |
| Kenneth M. Gale |
225 |
| Merle Shepard, Gerald R.Carner, and P.A.C Ooi |
222 |
| Jim Occi |
221 |
| Hannes Lemme |
220 |
| Catherine Herms |
219 |
| Barbara Tokarska-Guzik |
216 |
| Brytten Steed |
216 |
| Rocky Mountain Research Station/Forest Pathology Archive |
210 |
| Terry Price |
208 |
| Erich G. Vallery |
206 |
| Scott Bauer |
205 |
| Edward L. Manigault |
202 |
| Alfred Viola |
201 |
| A. Steven Munson |
200 |
| Maja Jurc |
200 |
| Ronald Smith |
194 |
| David Stephens |
189 |
| James Denny Ward |
188 |
| Alton N. Sparks, Jr. |
188 |
| Chuck Bargeron |
184 |
| Dennis Haugen |
180 |
| Manfred Mielke |
178 |
| Louis-Michel Nageleisen |
177 |
| Lynn Sosnoskie |
173 |
| Darren Blackford |
172 |
| Linda Haugen |
170 |
| Gil Wojciech |
170 |
| USDA APHIS PPQ Archive |
168 |
| USDA PLANTS Database |
162 |
| Norman E. Rees |
161 |
| USDA Forest Service Archive |
160 |
| Gerard D. Hertel |
160 |
| Howard Ensign Evans |
158 |
| Mary Ann Hansen |
152 |
| E. Richard Hoebeke |
152 |
| Dan Tenaglia |
152 |
| Charles T. and John R. Bryson |
152 |
| Randy Cyr |
149 |
| H.J. Larsen |
148 |
| John A. Weidhass |
145 |
| Susan Ellis |
143 |
| Connecticut Agricultural Experiment Station Archive |
143 |
| Haruta Ovidiu |
142 |
| Amy Ferriter |
138 |
| Arnold T. Drooz |
137 |
| Department of Plant Pathology Archive |
137 |
| Bekah Wallace |
137 |
| John H. Ghent |
130 |
| Paul A. Mistretta |
130 |
| Mark Frey |
128 |
| DAFF Archive |
127 |
| Steve Hurst |
126 |
| David Jones |
125 |
| Herbert A. "Joe" Pase III |
123 |
| USDA ARS Archive |
120 |
| Tom Heutte |
119 |
| Landesforstpräsidium Sachsen Archive |
119 |
| Eric Coombs |
119 |
| David B. Langston |
117 |
| Eugene E. Nelson |
116 |
| Dan Clark |
111 |
| Keith Kanoti |
110 |
| Doug Page |
110 |
| Richard Carter |
107 |
| Thomas Atkinson |
107 |
| Troy Evans |
105 |
| Larry R. Barber |
104 |
| Louis Tedders |
100 |
| James B. Hanson |
96 |
| L.L. Berry |
94 |
| Gary Alpert |
93 |
| Scott Tunnock |
93 |
| Donald Owen |
93 |
| USDA ARS Photo Unit |
92 |
| Michael Shephard |
91 |
| Cheryl Moorehead |
90 |
| Phil Westra |
89 |
| James R. Allison |
87 |
| Carey Minteer |
87 |
| Nancy Loewenstein |
85 |
| Jiri Hulcr |
85 |
| J.G. Davis |
83 |
| Thomas C. Croker |
82 |
| Jil M. Swearingen |
81 |
| David Riley |
80 |
| Thomas D. "Tom" Landis |
80 |
| Lori Oberhofer |
79 |
| Fred Baker |
78 |
| University of Georgia Archive |
77 |
| Andrea Battisti |
77 |
| M.E. Bartolo |
77 |
| Robert Dzwonkowski |
76 |
| Jeffrey W. Lotz |
75 |
| Peggy Greb |
75 |
| David McComb |
74 |
| Fabio Stergulc |
73 |
| G.E. Cardon |
73 |
| Carroll E. Younce |
72 |
| Jerald E. Dewey |
72 |
| Milan Zubrik |
72 |
| H C Ellis |
71 |
| Raymond Gill |
70 |
| Central Science Laboratory, Harpenden Archive |
69 |
| Great Smoky Mountains National Park Resource Management Archive |
69 |
| Randy Westbrooks |
69 |
| Albert (Bud) Mayfield |
69 |
| Arthur E. Miller |
68 |
| E. Bradford Walker |
67 |
| National Interagency Fire Center Archive |
67 |
| Jan Liska |
65 |
| Mike Schomaker |
64 |
| Center for Disease Control Archive |
64 |
| Billy Humphries |
62 |
| Jim Stimmel |
62 |
| Ricky Layson |
62 |
| Eric R. Day |
62 |
| Beat Forster |
62 |
| Utah State University Archive |
62 |
| Piero Amorati |
62 |
| Kevin D. Arvin |
61 |
| Zelimir Borzan |
60 |
| Scott Roberts |
60 |
| Thomas E. Hinds |
59 |
| Edward H. Holsten |
59 |
| Andrew J. Boone |
59 |
| Keith Weller |
59 |
| USDA Forest Service Archive |
58 |
| David P. Shorthouse |
58 |
| Theodor D. Leininger |
58 |
| Dale Wade |
58 |
| John D. Hodges |
58 |
| Doug Maguire |
58 |
| Montana Statewide Noxious Weed Awareness and Education Program Archive |
58 |
| Art Cushman |
57 |
| R.L. Croissant |
56 |
| North Carolina Forest Service Archive |
56 |
| Herb Pilcher |
56 |
| Susan K. Hagle |
56 |
| USDA Forest Service - Forest Health Protection - St. Paul Archive |
55 |
| Patricia M. Ciesla |
54 |
| Carl Dennis |
54 |
| Max Williamson |
53 |
| Steve L. Brown |
53 |
| Stephen F. Austin State University Archive |
53 |
| Jessica Lawrence |
53 |
| John Moser |
51 |
| Tim Tigner |
50 |
| William D. Boyer |
50 |
| Rayanne Lehman |
50 |
| Thomas B. Denholm |
50 |
| Daniela Lupastean |
49 |
| Lance S. Risley |
48 |
| Timothy Haley |
48 |
| Mark McMillan |
48 |
| John Triana |
46 |
| Daniel Herms |
45 |
| Kenneth E. Gibson |
45 |
| Marisa Williams |
45 |
| Todd Pfeiffer |
44 |
| John M. Randall |
44 |
| Georgia Forestry Commission Archive |
44 |
| Daniel Adam |
44 |
| Gary Peeples |
42 |
| Jody Fetzer |
42 |
| William A. Carothers |
41 |
| Ladd Livingston |
41 |
| Francis Gwyn Jones |
41 |
| N.A. Irlbeck |
41 |
| M.A. Brick |
41 |
| Michael C. Thomas |
39 |
| James Johnson |
39 |
| Kenneth R. Law |
38 |
| J.S. Quick |
37 |
| R.L. Hamblen |
36 |
| Steve McKeand |
36 |
| Elizabeth Bella |
35 |
| Lisa Ames |
35 |
| John W. Dooley |
35 |
| USDA ARS European Biological Control Laboratory |
35 |
| R. Scott Cameron |
34 |
| Vladimir Dinets |
34 |
| Harry O. Yates III |
33 |
| David Mohn |
33 |
| Dragan Nestorovic |
32 |
| Eli Sagor |
31 |
| David Parsons |
31 |
| Allen Bridgman |
31 |
| John W. Schwandt |
31 |
| Eddie McGriff |
30 |
| Cindy Roche |
30 |
| Sonya Broughton |
30 |
| Mike Reding & Betsy Anderson |
30 |
| Casey Sanders |
29 |
| Bonsak Hammeraas |
29 |
| Linda Wilson |
29 |
| J. Michael Moore |
29 |
| Dan Miller |
28 |
| U.S. Geological Survey Archive |
28 |
| Wayne Brewer |
28 |
| Oscar Dooling |
28 |
| Nancy Fraley |
28 |
| Jamie Nielsen |
28 |
| R.K. Jones |
27 |
| University of Arkansas Forest Entomology Lab Archive |
27 |
| José Luís Delgado |
27 |
| Jonathan D. Eisenback |
27 |
| Bruce W. Kauffman |
27 |
| George Markin |
27 |
| Mat Pound |
26 |
| Ronald S. Kelley |
26 |
| Yuri Yashin |
26 |
| Gino Nearns |
26 |
| W. Billen |
26 |
| Plant Protection Service Archive |
26 |
| Sasa Kunovac |
26 |
| Alberto Pantoja |
26 |
| Biologische Bundesanstalt für Land- und Forstwirtschaft Archive |
25 |
| Frank M. Riley, Jr. |
25 |
| Christopher Hogger |
25 |
| Brian Kunkel |
25 |
| Ron Halstead |
25 |
| Robert L. James |
25 |
| Loke T. Kok |
25 |
| USDA Forest Service - Region 4 Archive |
23 |
| John L. Foltz |
23 |
| Bob Farrah |
23 |
| Ron Long |
23 |
| Stephen Ausmus |
23 |
| UAF Cooperative Extension Archive |
23 |
| Bruce Moltzan |
23 |
| Esmat M. Hegazi |
22 |
| Jonathan Armstrong |
22 |
| Ulrich Zunke |
22 |
| USDA APHIS PPQ Archive |
22 |
| John Guyon |
22 |
| Gary L. Piper |
21 |
| James N. Long |
21 |
| Ministry of Agriculture and Regional Development Archive |
21 |
| David T. Almquist |
21 |
| Anthony D. White |
21 |
| Joe Nicholson |
21 |
| Jeff Stachler |
20 |
| Laura Lazarus |
20 |
| Frank E French |
20 |
| Gerald Wheeler |
20 |
| Kim Camilli |
20 |
| Lew Diehl |
20 |
| Diane Davies |
20 |
| Richard A. Casagrande |
20 |
| Bernd Blossey |
20 |
| USDA Forest Service Archive |
20 |
| Veli Pohjonen |
20 |
| Robert M. McPherson |
19 |
| Paula Klasmer |
19 |
| Bradley Higbee |
19 |
| Peter Wirtz |
19 |
| University of Idaho Archive |
19 |
| J. Jeffrey Mullahey |
19 |
| Allan Bullard |
19 |
| Cheryl McCormick |
19 |
| Dale E. Meyerdirk |
19 |
| Mark Atwater |
19 |
| Stephen M. Garnsey |
19 |
| Eric LaGasa |
19 |
| Mike Pingleton |
19 |
| Florida Fish and Wildlife Conservation Commission Archive |
19 |
| K.G. Beck |
18 |
| D.D. Cadahía |
18 |
| Stephen Bratkovich |
18 |
| Christopher Pierce |
18 |
| Mississippi State University Archive |
18 |
| Phillip Roberts |
18 |
| Charles Turner |
18 |
| Bob Nowierski |
17 |
| Daniel H. Brown |
17 |
| Terry English |
17 |
| James W. Byler |
17 |
| Zhihong Pan |
17 |
| Boris Hrasovec |
17 |
| F.W. Howard |
17 |
| H.R. Duke |
17 |
| P.F. Byrne |
17 |
| Beverly Turner |
17 |
| J.H. Hofmeyr |
16 |
| Ken Masten |
16 |
| Gerald Holmes |
16 |
| Cesar Calderon |
16 |
| Dennis Haugen |
16 |
| U. Mazzucchi |
16 |
| John Ruberson |
16 |
| James W. Amrine Jr. |
16 |
| Richard Sprenkel |
16 |
| Paul Bertrand |
16 |
| W. Robert Maple |
15 |
| Daniel R. Suiter |
15 |
| Agriculture and Agri-Food Canada Archive |
15 |
| Sandy Kegley |
15 |
| Ken A. Langeland |
15 |
| Texas Forest Service Archive |
15 |
| Dr. Reuven Jacobsohn |
15 |
| Jane Taylor |
15 |
| Jack Dykinga |
15 |
| Tom Coleman |
15 |
| H.C. Evans |
15 |
| Juan Manuel Alvarez |
15 |
| Eric Erbe |
14 |
| Michael Rasy |
14 |
| Mic Julien |
14 |
| Michael McClure |
14 |
| Eric Engbretson |
14 |
| Rachel Woodfield |
14 |
| Mark McGregor |
14 |
| Steve M. Brown |
14 |
| Patrick Breen |
14 |
| Jean Burns |
14 |
| Bernard J. Raimo |
14 |
| Gary Bernon |
13 |
| Norbert J. Cordeiro |
13 |
| David R. Lance |
13 |
| Karen Brown |
13 |
| Willey Durden |
13 |
| Scott Robinson |
13 |
| William Lambert |
13 |
| David Adams |
13 |
| USDA Forest Service - Pineville Archive |
13 |
| European and Mediterranean Plant Protection Organization Archive |
13 |
| Frantisek Soukup |
13 |
| Agriculture Canada, Ottawa Archive |
13 |
| Britt Slattery |
13 |
| S. K. Mohan |
13 |
| Ignacio Baez |
13 |
| Clinton Shock |
12 |
| Carol LaFayette |
12 |
| S.K. McDonald |
12 |
| Michael Barron |
12 |
| Gillian Allard |
12 |
| Paolo Mazzei |
12 |
| J.M. Bové |
12 |
| Alex Mangini |
12 |
| Jijing Song and Juan Shi |
12 |
| Thomas Jung |
12 |
| Victor Ryabincov |
12 |
| Agroscope FAL Reckenholz Archive |
12 |
| Paul E. Hennon |
12 |
| L.D. Dwinell |
12 |
| Mary Ann Fajvan |
12 |
| Robert F. Wittwer |
11 |
| W.H. Bennett |
11 |
| Donald M. Grosman |
11 |
| Doug Stone |
11 |
| David M. Moehring |
11 |
| Washington State University Archive |
11 |
| Randall Blackburn |
11 |
| Dwight K. Lauer |
11 |
| Bob Richard |
11 |
| Hector Mialma |
11 |
| L. Giunchedi |
11 |
| Canadian Food Inspection Agency Archive |
11 |
| Erik Stromberg |
11 |
| S.A. Andrews |
11 |
| Katherine Parys |
11 |
| Kristina Simms |
11 |
| Devon Pfeiffer |
10 |
| Peter Bedker |
10 |
| Andrew Derksen |
10 |
| Boris Castro |
10 |
| Skip Snow |
10 |
| Ruben Durán |
10 |
| California Department of Food and Agriculture Archive |
10 |
| Rebecca A. Melanson |
10 |
| Paul Butts |
10 |
| Kevin Enge |
10 |
| Roger Lopez-Chaves |
10 |
| Alison Fox |
10 |
| Edward Czerwinski |
10 |
| USDA Forest Service Archive |
10 |
| Dean Morewood |
10 |
| Milos Knizek |
10 |
| Barry Rice |
10 |
| Southern Forest Insect Work Conference Archive |
10 |
| Steve Passoa |
10 |
| Mike Ostry |
10 |
| Wayne N. Dixon |
10 |
| John M. Staley |
10 |
| Neal Spencer |
10 |
| Alec McClay |
9 |
| Leonard Newell |
9 |
| Vince Belleci |
9 |
| Jacques Regad |
9 |
| James W. Smith |
9 |
| Michael Bohne |
9 |
| Clair Merrit |
9 |
| Michael Mengak |
9 |
| Duane Raver |
9 |
| Sthephen A. Lewis |
9 |
| Bob Rabaglia |
9 |
| A. Eppler |
9 |
| T. Azeri |
9 |
| M. Clerjeau |
9 |
| J.K. Brown |
9 |
| Clive Shirley |
9 |
| Timothy Schubert |
9 |
| Robert Wick |
9 |
| Virginia Tech Learning Resources Center |
9 |
| Howard F. Schwartz & Jillian M. Lang |
9 |
| J.A. Davidson |
9 |
| Jeffrey Wilson |
9 |
| Ann Murray |
9 |
| Central Science Laboratory Archive |
9 |
| Andrew Petrie |
9 |
| John J. Mosesso |
9 |
| Andrea Atkinson |
8 |
| Stephanie Sopow |
8 |
| Steve Manning |
8 |
| HortNET |
8 |
| Ian Kimber |
8 |
| Connie Strunk |
8 |
| Linda Lee |
8 |
| James D. Ellis |
8 |
| D.R. Miller |
8 |
| G.W. Buchleiter |
8 |
| Nancy Gregory |
8 |
| Tom Gray |
8 |
| Robert Richardson |
8 |
| Stacey Leicht |
8 |
| J.J. Tuset |
8 |
| L. Navarro |
8 |
| J.P. Michaud |
8 |
| U.S. Fish and Wildlife Service Archive |
8 |
| Ollie Knott |
8 |
| SCRI-Dundee Archive |
8 |
| USDA ARS Archive |
8 |
| W.G. Ziller |
8 |
| UK Forestry Commission Archive |
8 |
| Jenn Grieser |
8 |
| USDA APHIS PPQ Archive |
8 |
| Julie Kikkert |
8 |
| Brian Sullivan |
8 |
| Troy Kimoto |
8 |
| Jeff Portwood |
8 |
| Barry Freeman |
8 |
| Tim Murphy |
8 |
| Paul Weston |
8 |
| James R. Meeker |
8 |
| I. Blakey Lockman |
8 |
| USDA Forest Service - Alaska Archive |
8 |
| Peter A. Rush |
8 |
| Bob Oakes |
7 |
| Donald F. Rogers |
7 |
| Billy Craft |
7 |
| John Connett |
7 |
| Nez Perce BioControl Center Archive |
7 |
| Tom Creswell |
7 |
| Alan Flynn |
7 |
| Anne W. Gideon |
7 |
| Byron Rhodes |
7 |
| J. Brasington |
7 |
| John Kraus |
7 |
| Fred Nation |
7 |
| Robert L. Johnson |
7 |
| Bill Gallup |
7 |
| Juan Shi |
7 |
| Connie Gray |
7 |
| Victor Cordova |
7 |
| Wayne Williamson |
7 |
| Jason Gatch |
7 |
| Kevin Dodds |
7 |
| Lee Karney |
7 |
| Mariano Muñiz |
7 |
| Janet S. McCulloch |
7 |
| Carlos Amadeu Leite de Oliveira |
7 |
| David Nance |
7 |
| David Hall |
7 |
| Rudolf H. Scheffrahn |
7 |
| Hania Arentsen |
7 |
| David Nicholls |
7 |
| Amy Benson |
7 |
| K. George Beck & James Sebastian |
7 |
| G.M. Buxton |
7 |
| Ida Paul |
7 |
| Mark Czarnota |
7 |
| Jeremy Lee |
7 |
| Georgette Smith |
7 |
| Lilia De Guzman |
6 |
| Thomas Elias |
6 |
| Stephen Lew |
6 |
| Michigan Department of Agriculture |
6 |
| O.P. Sharma |
6 |
| Brad Haire |
6 |
| Bodie Pennisi |
6 |
| Bob Lepak |
6 |
| Douglas Barbe |
6 |
| Forest Research |
6 |
| Peter Stephen |
6 |
| Michael Kangas |
6 |
| Rich Sabulsky |
6 |
| Lester E. Dickens |
6 |
| K.A. Barbarick |
6 |
| J.C. Wells |
6 |
| Don Herbison-Evans |
6 |
| Ian F. Smith |
6 |
| K.B. Jamieson |
6 |
| E.G. Kuhlman |
6 |
| Kurt Stueber |
6 |
| David G. Robinson |
6 |
| Luboš R. Kolouch |
6 |
| Billy R. Wiseman |
6 |
| Stanley Culpepper |
6 |
| Jon Sweeney |
6 |
| Les Tanner |
6 |
| John N. Gibbs |
6 |
| Christina DiFonzo |
6 |
| H.H. Triantaphyllou |
6 |
| Jeffrey J. Jackson |
6 |
| International Potato Center Archive |
6 |
| J.D. Roberts |
6 |
| Sanford D. Porter |
6 |
| Holly Thornton |
6 |
| Greg Leach |
6 |
| Tom Eubank |
6 |
| Kristen Riolo |
6 |
| Kevin Taylor |
6 |
| Carol J Nichols |
6 |
| Hong Cheng |
6 |
| James P. Cuda |
6 |
| Raghavan Charudattan |
6 |
| Tim Varnedore |
6 |
| Takumasa Kondo |
6 |
| Alan Grant |
6 |
| Jean L. Williams-Woodward |
6 |
| Robert F. Bassett |
6 |
| The Nature Conservancy Archive |
6 |
| Patrick H. Brose |
6 |
| Gary Buckingham |
6 |
| Jim Story |
6 |
| Robert D. Richard |
6 |
| Montana State University Archive |
6 |
| Tom Laurent |
6 |
| D. W. French |
6 |
| Forrest L. Oliveria |
6 |
| R.C. Morris |
6 |
| Peter L. Lorio, Jr. |
6 |
| Borys M. Tkacz |
6 |
| Robert A. Haack |
6 |
| USDA Forest Service - Ashville Archive |
5 |
| James McGraw |
5 |
| James A. Copony |
5 |
| Lawrence Abrahamson |
5 |
| T.W. Bretz |
5 |
| Christine A. Bennett |
5 |
| Hugo A. Cordo |
5 |
| Dewey Lee |
5 |
| Heather Faubert |
5 |
| Ted D. Center |
5 |
| Philip McDonald |
5 |
| Albert Kais |
5 |
| Bob McMurry |
5 |
| Canadian Forest Service Archive |
5 |
| Gary M. Stolz |
5 |
| Susan Wineriter |
5 |
| Petr Srutka |
5 |
| Ben Jackson |
5 |
| David R. McKay |
5 |
| Donna R. Ellis |
5 |
| Toby Petrice |
5 |
| Michael Montgomery |
5 |
| Scott Carlson |
5 |
| Virgil Davis |
5 |
| James Smith |
5 |
| Nadia Da Ros |
5 |
| Diane Hildebrand |
5 |
| Gary Nichols |
5 |
| Richard Smith |
5 |
| Angela Walther |
5 |
| Claudia Dolinski |
5 |
| John R. Seiler |
5 |
| Dennis Teague |
5 |
| Jean-François Abgrall |
5 |
| Laurie Reid |
5 |
| Philip Rusted |
5 |
| Kent Loeffler |
5 |
| Scott Horn |
5 |
| Marianne Prue |
5 |
| Art Wagner |
5 |
| Susan Turner |
5 |
| Rosemarie De Clerck-Floate |
5 |
| American Phytopathological Society Archive |
5 |
| T.W. Mew |
5 |
| G. Morvan |
5 |
| Laurence I. Miller |
5 |
| State Plant Pathology Institute of Denmark Archive |
5 |
| Bill Godfrey |
5 |
| Giuseppina Pellizzari |
5 |
| Dr. Lynn Clark and Anna Gardner |
5 |
| Lynn Jones and Nathan Havill |
5 |
| J.W. Walters |
5 |
| M.G. Klein |
5 |
| P.G. Psallidas |
5 |
| Doug Landis |
5 |
| Bart Wursten |
5 |
| A.T. Jones |
5 |
| A. van Frankenhuijzen |
5 |
| Walter Stahel |
5 |
| G. Marchoux |
5 |
| Dr. Augustin |
5 |
| Robert Hedburg |
5 |
| Biologische Bundesanstalt für Land- und Forstwirtschaft Archive |
5 |
| R.F. Scharpf |
5 |
| Howard F. Schwartz & Mark S. McMillan |
5 |
| Clint Hardy |
5 |
| Mandy Tu |
5 |
| Jim Baker |
5 |
| Ernest C. Bernard |
5 |
| A.A. Newton |
5 |
| Nava Tabak |
5 |
| Nancy Hinkle |
5 |
| Mary Benson |
5 |
| Sam Markell |
5 |
| Jessica Price |
5 |
| Laura Rogers |
5 |
| Brian Perchtel |
4 |
| Paul E. Skelley |
4 |
| Virginia Tech Plant Pathology Archive |
4 |
| Jeff Sexton |
4 |
| R.S. Peterson |
4 |
| S.R. Andrews |
4 |
| Heinz USA Archive |
4 |
| Alexander Purcell |
4 |
| A. Vigouroux |
4 |
| Gerhard Elsner |
4 |
| J. Guyot |
4 |
| M.A. van den Berg |
4 |
| Victor Sarto i Monteys |
4 |
| Biolog. Bundesans., Inst. f. Pflanzenschutz im Weinbau Archive |
4 |
| Forestry Canada, Ottawa Archive |
4 |
| Larry Line |
4 |
| C.A. de Klerk |
4 |
| Gerald D. Carr |
4 |
| Stephen W. Bullington
|
4 |
| UConn Plant Database www.hort.uconn.edu/plants |
4 |
| Ohio State Univ Ohio Ag. research & Development Center |
4 |
| Jack Ranney |
4 |
| Dr. Backhaus |
4 |
| Houping Liu |
4 |
| C.E. Seliskar |
4 |
| Csaba Szaboky |
4 |
| M. Goto |
4 |
| Richard C. Edwards |
4 |
| R. Grimm |
4 |
| G.W. Wallis |
4 |
| Svetlana Y. Gouli |
4 |
| Carole Cheah |
4 |
| Ashley Lamb |
4 |
| Virginia Tech Weed Identification Guide Archive |
4 |
| David Conklin |
4 |
| Tom Hall |
4 |
| SRPV, Nice Archive |
4 |
| Pflanzenschutzamt Weil-am-Rhein Archives Archive |
4 |
| University of New South Wales Archive |
4 |
| Volcani Center Archive |
4 |
| INRA-Bordeaux Archive |
4 |
| S.L. Goldson |
4 |
| Bayer Pflanzenschutz Archive |
4 |
| ENSA-Montpellier Archive |
4 |
| Richard W. Hansen |
4 |
| Temel Gokturk |
4 |
| April Noble |
4 |
| Nancy Gillette |
4 |
| International Rice Research Institute Archive |
4 |
|