m 



ONCIDIUM luridum. 

 Mr. Grin's Oncidium. 



GTNANDRIA MOifAyDRIA. 



Nat. mrd. Orchideje. Broumprod. 1. 309. Jhv. IV. Anthera ter- 

 minalis mobilis decidua. Massse pdiluiis demittn cereacMeJ Brown in Hart 

 Kew. ed. 2. 5. 205. ^^ 



ONCWiUM. Labelbim explanatom lobatum basi tuberculatum. Pe- 



taia patentia (2 antica nunc connata). Cohtmna ^ata. Maaiee poBim$ 2, 



postic^ bilobx, medio affixse process^ cooununi stiinnatis. Broumi* he. 

 ci«. 215. ^ 



luridum, foliis ellipticis acutb^ scapo stricto nunoBo, periantiiii 

 patentibus undulatis retusis subtequaKbIs, labello renifonni, c 

 alls rotundatis. J. L. 



An unrecorded species ; drawn from tbe collection of 

 Mr. Griffin, at South Lambeth. Native of South ^^erica. 



It is very nearly related to Oncidium cartkaginense, from 

 which it is nevertheless essentially distinguished by the 

 diiferent shape of its powers, and by having its upper petal 

 shaped like those next it> and not galeate and incumbent 

 upon the column as in O. cdrtkaginense. It also seems to 

 differ from the latter species in not having the two lat^nJ 

 outer petals smaller than the corresponding inner pevdn, 

 and in having a colourless, not red, coluMna. The Onci- 

 dium olivaceum of M. Kunth, which j>robabIy resembles this 

 in some particulars, is obviously mstinguished by its re- 

 flexed petals aind trifid labellum. J* L. 



Oncidium is distinguished in its division of. the order 

 by " a flat-lobed label, knobby at the base ; spreading pe- 

 tals (the two front ones of which are sometimes grown to- 

 gether) ; a winged column; a pEur of pollen-masses j double- 

 lobed behind, and fixed at the middle by a common pro- 

 cess belonging to the sHgmar 



Tbe coloured leaf and uncoloured scape, in our figure, 

 are much diminished : tbe coloured spike of flowers and 

 uncoloured leaf are of the natural size. 



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