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A New Brachionidium (Orchidaceae: Pleurothallidinae) from the First Botanical Expedition to the Volc�n Cacho Negro, Costa Rica

2016; American Society of Plant Taxonomists; Volume: 41; Issue: 4 Linguagem: Inglês

10.1600/036364416x694017

1548-2324

Diego Bogar�n, Adam P. Karremans,

Plant and Fungal Species Descriptions

Abstract A new species of Brachionidium from Costa Rica is described and illustrated. Brachionidium cornu-nigricum, from the Volcan Cacho Negro, a remote, previously unexplored location in Costa Rica, is most similar to B. filamentosum. It differs in the white sepals, short-acuminate sepals and petals up to 1 cm long, the triangular, unlobed lip, the oblong glabrous callus provided with two small basal lobes, and the eight pollinia.