Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica

During a search for populations of wild common bean, namely south of the Central Valley of Costa Rica, a new bean species, Phaseolus albicarminus, has been found on the slope of a mountainous range named Cerros Llano Bonito in the western part of Talamanca range, where it appears to be endemic. Its...

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Autores principales: Debouck, Daniel G., Chaves-Barrantes, Néstor Felipe, Araya Villalobos, Rodolfo
Formato: Journal Article
Lenguaje:Inglés
Publicado: Magnolia Press 2020
Materias:
Acceso en línea:https://hdl.handle.net/10568/108643
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author Debouck, Daniel G.
Chaves-Barrantes, Néstor Felipe
Araya Villalobos, Rodolfo
author_browse Araya Villalobos, Rodolfo
Chaves-Barrantes, Néstor Felipe
Debouck, Daniel G.
author_facet Debouck, Daniel G.
Chaves-Barrantes, Néstor Felipe
Araya Villalobos, Rodolfo
author_sort Debouck, Daniel G.
collection Repository of Agricultural Research Outputs (CGSpace)
description During a search for populations of wild common bean, namely south of the Central Valley of Costa Rica, a new bean species, Phaseolus albicarminus, has been found on the slope of a mountainous range named Cerros Llano Bonito in the western part of Talamanca range, where it appears to be endemic. Its main morphological features are: short pseudoracemes with four small deltoid primary bracts, small early caducous deltoid bracteoles, calyx lobes reduced to two lips, white wings contrasting with carmine purple inner face of standard, and smoothly curved 3–4 seeded pods with prow-shaped beak. The differences with apparently closely related species, P. hygrophilus and P. angucianae, are: in primary bracts (orbicular versus oval acuminate), larger bracteoles (cordate versus rounded), inner face of standard (pale pink to white versus purple), lower calyx lobes (rounded versus triangular), and pod dorsal suture (straight versus sigmoid), respectively. The fact that to date only three populations of P. albicarminus are known from the same small area of Costa Rica, calls for monitoring its conservation status. This new species is tentatively assigned to the section Brevilegumeni which seems well represented in Costa Rica (with five out of six taxa).
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spelling CGSpace1086432025-11-11T17:44:36Z Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica Debouck, Daniel G. Chaves-Barrantes, Néstor Felipe Araya Villalobos, Rodolfo highlands zona de montaña legumes leguminosas During a search for populations of wild common bean, namely south of the Central Valley of Costa Rica, a new bean species, Phaseolus albicarminus, has been found on the slope of a mountainous range named Cerros Llano Bonito in the western part of Talamanca range, where it appears to be endemic. Its main morphological features are: short pseudoracemes with four small deltoid primary bracts, small early caducous deltoid bracteoles, calyx lobes reduced to two lips, white wings contrasting with carmine purple inner face of standard, and smoothly curved 3–4 seeded pods with prow-shaped beak. The differences with apparently closely related species, P. hygrophilus and P. angucianae, are: in primary bracts (orbicular versus oval acuminate), larger bracteoles (cordate versus rounded), inner face of standard (pale pink to white versus purple), lower calyx lobes (rounded versus triangular), and pod dorsal suture (straight versus sigmoid), respectively. The fact that to date only three populations of P. albicarminus are known from the same small area of Costa Rica, calls for monitoring its conservation status. This new species is tentatively assigned to the section Brevilegumeni which seems well represented in Costa Rica (with five out of six taxa). 2020 2020-07-01T14:06:12Z 2020-07-01T14:06:12Z Journal Article https://hdl.handle.net/10568/108643 en Open Access application/pdf Magnolia Press Debouck, D.G.; Chaves-Barrantes, N.; Araya-Villalobos, R. (2020) Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica. Phytotaxa 449 (1): 1-14. ISSN: 1179-3155
spellingShingle highlands
zona de montaña
legumes
leguminosas
Debouck, Daniel G.
Chaves-Barrantes, Néstor Felipe
Araya Villalobos, Rodolfo
Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica
title Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica
title_full Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica
title_fullStr Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica
title_full_unstemmed Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica
title_short Phaseolus albicarminus (Leguminosae, Phaseoleae), a new wild bean species from the subhumid forests of southern central Costa Rica
title_sort phaseolus albicarminus leguminosae phaseoleae a new wild bean species from the subhumid forests of southern central costa rica
topic highlands
zona de montaña
legumes
leguminosas
url https://hdl.handle.net/10568/108643
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