Author

John L Clark

The Lawrenceville School
Lawrenceville, United States of America

6 articles by this author

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: 323 | Total: 417

Reprint: € 4,80

49-61

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: 3557 | Total: 4560

Reprint: € 4,80

33-46

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: 575 | Total: 837

Reprint: € 4,80

1-14

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: 952 | Total: 1383

Reprint: € 3,60

1-9

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: 1130 | Total: 1584

Reprint: € 4,80

67-82

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: 1005 | Total: 1432

Reprint: € 3,60

99-110

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