ONCIDIUM. 87 



'^'Originally imported from Brazil by Messrs. Loddiges, in wliose 

 nursery it flowered in September, 1838.'^ This is all that has been 

 published respecting its origin, and we find no precise habitat 

 attached to herbarium specimens. Its native home is doubtless in 

 the rich Oncidium region lying to the north and west of Kio de 

 Janeiro. We are indebted to the Royal Gardens at Kew for materials 

 for description. 



On. unicorne. 



r.sciulo-l)uI))s oval-oblong, compressed, 2 — 3 inches long, diphyllous. 



Leaves linear-lanceolate, acute, 5 — 9 inches long. Scapes erect or 



inclined, as long again as the leaves, pale glaucous green, loosely 



panicled above. Flowers f inch across vertically ; sepals lanceolate, the 



lateral two connate almost to the apex, pale greenish or reddish 



brown ; petals broader, oblong, undulate, red-brown tipped with light 



yellow, both sepals and petals r(dlexed ; lip with a fleshy claw and 



sub-panduriform emarginate blade, of which the basal half is red and 



the apical half yellow ; crest prolonged into an incurved reddish horn 



as long as the column. Column slender, wingless, but with the 



characteristic swelling below the stigma. 



Oncidium unicorne, Lindl. in Bot. Reg. 1837, misc. No. 76. Id. Fol. Orcli. Oncid. 

 No. 71. Kchb. in Gard. Chron. XIV. (1880), p. 652 (pictum). On. moiioceras, 

 Hook. Bol. Mag. t. 3890. 



First imported by Messrs. Rollisson from Rio de Janeiro in 1839, 

 and shortly afterwards sent from that city by Mr, Hunt to the 

 Duke of Bedford, in whose collection at Woburn Abbey it flowered 

 in January, 1840. It has been reported from several localities in 

 southern Brazil ; it was detected by Gardner on the Organ 

 Mountains, afterwards by Regnell in Minas Geraes, and later by 

 Weir in Sao Paulo. 



On. urophyllum. 



Pseudo-bulbs none. Leaves equitant, ensiform, curved, 4 — 6 inches 



long, acuminate, dull dark green. Scapes slender, drooping, 18 — 24 



inches long, dull brownish crimson, loosely panicled, many flowered. 



Flowers about an inch in diameter ; sepals and petals yellow, blotched 



with chestnut-brown, the sepals linear-acute, the l;tteral two connate 



almost to their apex; the petals obovate, apiculate ; lip three-Iobed, 



canary-yellow, the l:)asal lobes small, obovate ; the front lobe clawed, 



broadly reniform with a sinus in the anterior margin ; crest red and 



white, consisting of eight teeth arranged somewhat in (piincmicial order. 



Column wings dolabriform, spreading. 



Oncidium urophyllum, Lind. Sort. Orch. sub. t. 48 (1838). Id. Bol. Ecg. 1842, 

 t. 54. Id. Fol. Orch. Oncid. No. 33. Rolfe in Oard. Chron. IX. 8. 3 (1891), p. 701. 



