22 okciDiUM. 



Oiicidium CeboUeta, Swartz in K. Vet. Acad. Stockh. Nya. Handl. XXI. p. 240 

 (1800). Lindl. Gen. et. Sp. Orcli. p. 206 (1833). Id. Fol. Orch. Oncid, No. 42. 

 Bot. Reg. t. 1994. Bot. Mag. t. 3568. On. juncifolium, Lindl. Collect. Bot. p. 27 

 (1821 -25). On. longifoliiun, Lindl. in Bot. Reff. 1841, misc. 56, and 1842, t. 4. 

 Ejndendrum Cebolleta, Jacquin. E. juncifolium, Linn. Sp. PI. 1351. 



One of the first Oncids known to science^ and so far as at present 

 known^ the most widely dispersed species in the genus. It was first 

 discovered by Jacquin in the forests of Cartagena, about the same 

 time as he discovered Oncidium carthaginense, and in common with 

 that species it is one of the five upon which Swartz founded the 

 genus Oncidium. In more recent times it has been gathered by 

 llartweg in Mexico, by Spruce in the Brazilian province of Para, 

 by various collectors in the West Indies, and within the last few 

 years it has been sent from Paraguay with On. Jonesianum ; its 

 dispersion is thence almost conterminous with the geographical 

 distribution of the genus. Over such an extensive region it is not 

 surprising that it should vary, more or less, in some of its charac- 

 teristics, a circumstance to which it owes its many synonyms. The 

 earliest notices we find of its flowering in this country are in Messrs. 

 Low's nurseries at Clapton in 1837, in the Botanic Garden at 

 Glasgow in the following year, and shortly afterwards in Mr. Horsfall's 

 collection at Liverpool. On. Geholleta, as already mentioned in our 

 introductory notes, is the typical species of the section Teretipolia, 

 distinguished by their rounded tapering leaves; the specific name is 

 the Spanish word for a small onion. 



On. cheirophorum. 



Pseudo-bulbs ovoid-orbicular, quite smooth, much compressed, about an 

 inch in diameter, monophyllous. Leaves linear, acute, 3 — 6 inches long. 

 Peduncles slender, usually longer than the leaves, nodding, densely 

 paniculate with short branches, many flowered. Flowers ^ inch in 

 diameter, bright buttercup-yellow, the crest of the lip much paler, some- 

 times whitish ; sepals and petals sub-equal, orbicular-obovate, concave ; 

 lip three-lobed, the lobes variable, the lateral two orbicular or oblong, 

 the mtermediate one usually broader than long, emarginate ; the crest a 

 central ridge, two-lobed in front, and with two lateral plates at the 

 posterior end. Column wings large, dolabriform ; anther beaked. 



Oncidium cheirophorum, Rchb. in Bot. Zeit. X. (1852), p. 695. Id. Xen. Orch. I. 

 p. 191, t. 69, fig. 1. Lindl. Fol. Orch. Oncid. No. 124. Bot Mag. t. 6278. Rearers 

 Gartcnfl. XXII. t. 827. Godefroy's Orchidophile, 1885, p. 102. Lindcnia, III. 

 t. 126. 



Discovered by the Polish botanical traveller and collector, 



Warscewicz, in 1818 — 9, on the volcano of Chiriqui in Veragua, 



