Encyclia oncidioides is a species of orchid. The diploid chromosome number of E. oncidioides has been determined as 2n = 40.page 251 of Leonardo P. Felix and Marcelo Guerra: "Variation in chromosome number and the basic number of subfamily Epidendroideae (Orchidaceae)" Botanical Journal of the Linnean Society 163(2010)234-278. The Linnean Society of London. downloaded October 2010 from http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2010.01059.x/pdf
It has been placed in Encyclia sect. Hymenochila.H. G. Reichenbach, "Orchides", nr. 51, in C. Müller, Ed. Walpers. Annales Botanices Systematicae 6(1861)327—9, as "EPIDENDRUM ONCIDIOIDES"
Synonyms Epidendrum oncidioides Lindl. (Basionym) Epidendrum ensiforme Vell. Epidendrum gravidum Lindl. Epidendrum guillemianum Lindl. ex Planch. Epidendrum longifolium Barb.Rodr. Epidendrum sintenisii Rchb.f. Epidendrum monticola Fawc. & Rendle. Encyclia longifolia (Barb.Rodr.) Schltr. Encyclia gravida (Lindl.) Schltr. Encyclia sintenisii (Rchb.f.) Britton Epidendrum oncidioides var. gravidum (Lindl.) Ames Encyclia monticola (Fawc. & Rendle) Acuña Encyclia ensiformis (Vell.) Hoehne Encyclia oncidioides var. gravida (Lindl.) Hoehne Encyclia vellozoana Pabst Encyclia cardimii Pabst & A.F.Mello
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