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John L Clark    
The Lawrenceville School
Lawrenceville, United States of America
7 articles by this author
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Research Article
Monopyle glutinosa (Gesneriaceae), a new species from the western slopes of the Ecuadorian Andes
    John L. Clark,     Franciso Tobar, Jeremy Keene
10.3897/phytokeys.210.89520
 28-09-2022
 Unique: 250 | Total: 302  | Access Period:
 Reprint: € 2,60
 15-21
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Research Article
Two new pendulous epiphytic Columnea L. (Gesneriaceae) species from the Chocó forests of the Northern Andes
    Francisco Tobar, James F. Smith,     John L. Clark
10.3897/phytokeys.196.79673
 16-05-2022
 Unique: 734 | Total: 965  | Access Period:
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 49-61
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Short Communication
Rediscovery of Gasteranthus extinctus L.E.Skog & L.P.Kvist (Gesneriaceae) at multiple sites in western Ecuador
    Nigel C. A. Pitman, Dawson M. White, Juan Ernesto Guevara Andino,     Thomas L. P. Couvreur, Riley P. Fortier, José Nicolás Zapata,     Xavier Cornejo,     John L. Clark, Kenneth J. Feeley, Mark K. Johnston, Alix Lozinguez, Gonzalo Rivas-Torres
10.3897/phytokeys.194.79638
 15-04-2022
 Unique: 4126 | Total: 5554  | Access Period:
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 33-46
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Research Article
Two new species of Drymonia (Gesneriaceae) from Northwestern South America, including the discovery of the longest flower known in the genus
    John L. Clark,     Laura Clavijo
10.3897/phytokeys.190.72740
 17-02-2022
 Unique: 756 | Total: 1128  | Access Period:
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 1-14
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Research Article
Glossoloma wiehleri (Gesneriaceae), a new species from the northwestern Andes of Ecuador
    John L. Clark,     Francisco Tobar
10.3897/phytokeys.186.73554
 29-11-2021
 Unique: 1130 | Total: 1694  | Access Period:
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 1-9
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Research Article
Three new species of Columnea (Gesneriaceae) from the western Andean slopes of Ecuador and Colombia
    John L. Clark,     Francisco Tobar,     Laura Clavijo, Mathieu Perret, Catherine Helen Graham
10.3897/phytokeys.182.69016
 20-09-2021
 Unique: 1314 | Total: 1887  | Access Period:
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 67-82
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Research Article
New circumscriptions add two northern Andean species to Kohleria (Gesneriaceae)
    John L. Clark, Lou Jost
10.3897/phytokeys.179.65990
 12-07-2021
 Unique: 1147 | Total: 1746  | Access Period:
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 99-110
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