ONCIDIUM. 601 



several other processes, besides a few varicosities towards the edge of the lip. — 

 Brazil; ? Mexico. 



Fig.— A'. S,- W. Floral Cab., iii. t. 137 ; But. Reg., 184."). t. 40 ; Annales de Ganil ., 

 1845, t. 1 ; Journ. of Hurt. Sue. Land., 1848, xvii. {Plnellianum'). 



Syn.— Var. A. : 0. xpUoptcrnm, 0. gallo-pavinum, . Htmuqx'talum ; Var. B. : (). 

 ramosum, 0. PinvUiatmm. 



O. BICALLOSUM, Lindl. — A showy dwarf species without pseudobulbs, but 

 producing a single dark green oblong leaf, which is remarkably thick and fleshy 

 in texture, and keeled so as to become almost boat-shaped. The peduncle or 

 scape rises with the leaf from between some basal scales, and is dwarfish, erect, 

 bearing a many-flowered raceme ; the flowers are large and showy, with obovate 

 spreading sepals and petals, the latter rather larger, all undulated and yellow 

 tinged with green, and a large three-lobed lip of a bright yellow, the lateral lobes 

 small and obovate, the intermediate one large and two-lobed, with a bicallosc 

 crest at its base. This makes a fine plant for winter blooming, and continues in 

 ]5erfection a long time. It is very much like 0. Caveiidishia nwm in its flowers 

 and manner of growth, but is less robust. — Ouatemala. 



FJG.—JSot. Mag., t. 4148 (colour incorrect) ; But. Reg., 1843, 1. 12 ; L'lll. Hurt., t. 458. 



O. BICOLOR, Lindl. — This fine species has oval compressed pseudobnlbs, 

 three-ribbed on each side, solitary oblong sessile leaves, and divaricate panicles of 

 handsome flowers, which have ovate acute sepals and petals, and a flat bilobed 

 lip, which is very large, deep yellow on the upper side, and almost white under- 

 neath, the sepals and petals and the base of the lip being spotted with chestnut- 

 brown. It blooms in September. This will thrive on a block suspended from 

 the roof; Lindley places it as a variety (bicolor) of 0. Martianum, the type of 

 which has whole-coloured yellow blossoms. — Brazil. 



Fig.— But. Reg., 1843, t. 66. 



O. BIFOLIUM, Sims. — A handsome dwarf-growing species now very rare, 

 having ovate dark green obsoletely hexagonal pseudobnlbs, and short lanec- 

 shaped keeled deep green leaves, borne in pairs. The slender scapes proceed 

 from the base of the bulbs, and bear elegant nodding racemes of eight or ten 

 showy flowers, which have the small ovate or oblong sepals and petals yellow, 

 barred and spotted with rich chestnut-brown, and the lip large, flat, two-lobed, 

 of a transversely reniform outline, and a bright yellow colour. It produces 

 these flowers in May and June, and they last a long time in perfection. There 

 are two varieties of this plant, one much brighter than the other in the colour 

 of the flowers. It is best grown in a pot, suspended from the roof, and requires 

 to be potted in peat and sphagnum moss ; ample drainage should also be given, 

 as it enjoys a liberal supply of water. — Monte Video. 



Fia.— But. Mag., t. 1491 ; Veitch's 3fan. Orch. PI., viii. p. 14. 



O. BIFOLIUM MAJUS, Hort. — A superb variety of the preceding species, in 

 which the pseudobulbs are much larger, and the habit of the plant altogether 

 more robust. The spike is quite double the length of that of the type, and bears 

 fully double the number of flowers, of which the sepals and petals are brown 

 faintly marked with yellow, and the very large lip is brilliant yellow. They are 



