1911 



* ONCIDIUM iridif61ium. 



Pigmy Oncidmm. 



GYNANDRIA MONANDRIA. 



Nat. ord. ORCHiDACEiE, § Vande^e. 

 ONCIDIUM.— Suprd, vol. i3. fol. 1050. 



C. iridifolium ; foliis ensiformibus brevibus equitantibus, scapo slmplici sub- 

 unifloro, sepalo supremo obtuso : lateralibus acutis collateralibus (herbaceis), 

 petalis obtusis undulatis majorlbus, labellilobis lateralibus parvis subrotundis 

 unguiculatis : intermedio multo majore subrotundo bilobo utrinque versus 

 apicem emarginato, crista (depressa 5-loba apice truncata), columnae ala 

 crenulata circumdante. Gen. §• Sp. Orch. 203. 

 Folia nunc eguitantia, nunc explanata, semper acuta. Crista labelli 



apice truncata crenulata, basi disciformis, lobulis duobus in vertice disci. 



This curious little species of Oncidium seems to be com- 

 mon in many of the hotter parts of America ; for it has been 

 found from Mexico, New Grenada, and Surinam, as far south 

 as Brazil. M. Descourtilz, in his manuscript account of 

 Brazilian Orchideae, observed it in the neighbourhood of the 

 town of Bom Jesus de Bananal in the province of St. Paul's, 

 growing exclusively upon the branches of Orange and Lemon 

 trees; it was very abundant there, and constantly preferred 

 dry places exposed to the sun. 



The specimen from which the accompanying drawing 

 was taken was sent me by Lord Fitzwilliam's desire, from 

 the rich collection at Went worth, in August, 1835. 



The outline figure at the bottom of the plate represents 

 the column, with its two serrated wings, and the lower part 

 of the lip, with the tuberculated disk, by which the species 

 of Oncidium are remarkably well distinguished. 



* See folio 1542. 



