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Barkley, Fred

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Phoradendron wattii

Fred A. Barkley
Scybalium jamaicense (Sw.) Schott & Endl.

Fred A. Barkley
Passiflora panamensis

Fred A. Barkley and Ovidio Arboleda
Palicourea angustifolia

Fred A. Barkley and Gabriel Gutiérrez V.
palicourea perquadrangularis

Fred A. Barkley and Gabriel Gutiérrez V.
Palicourea demissa

Fred A. Barkley and Marceliano
Chicocca alba

Fred A. Barkley and Francisco Montoya
Dendropanax arboreum

Fred A. Barkley and George R. Proctor
Rivinia humilis

Fred A. Barkley and George R. Proctor
Ruellia pennellii

Fred A. Barkley and Jaime Rivera
Siphocampylus hispidus

Fred A. Barkley and Jorge Hernan Torres R.
Rivinia humilis

Fred A. Barkley and Grady L. Webster
Rondeletia hirta

Fred A. Barkley and Grady L. Webster
Aralia hispida Vent.

Fred Barkley
Cephalanthus occidentalis L.

Fred Barkley
Pinus strobus L.

Fred Barkley
Plantago rugelii Decne.

Fred Barkley
Polygonum sagittatum L.

Fred Barkley
Acer negundo L.

Fred A. Barkley
Lysimachia quadrifolia L.

Fred A. Barkley
Acer rubrum Wats.

Fred A. Barkley and Eugene Courtney
Acer rubrum Wats.

Fred Barkley and Eugene C. Courtney
Campanula L.

Fred Barkley and Jorge S. Marroquin
Lobelia L.

Fred Barkley and J. S. Marroquin
Populus tremuloides Michx.

E.C. Courtney and Fred A. Barkley