630 orchid-grower's manual. 



O. SANGUINEUM.-See O. roseum. 



O. SARCODES, Lhidl. — A remarkably fine species, producing its sHowy and 

 handsome flowers during March and April. The pseudobulbs are sub-cylindrical, 

 from 3 to 4 inches long, terminated by two or three broad lanceolate leaves, and 

 developing from the base a many-flowered panicle of large and handsome flowers, 

 of which the upper sepal is obovate, yellow with dull brown cross-bars, the two 

 lateral ones lance-shaped and dull-coloured, the petals ouneate spathulate, the 

 basal two-thirds bright chestnut-brown with a few yellow cross lines, the apical 

 portion yellow, and the broad repand undulated lip clear yellow except a few red 

 spots in front of the crest. This showy plant has been scarce, but latterly there 

 have been some large importations, which have yielded many varieties. It will 

 do either in a basket or in a pot, with peat and moss. — Brazil. 



Fig.— IFarreec, Sel. Orch. PI., i. t. 23 ; L'lll. Ilort., 3rd ser., t. 16.9 ; Paxton, Mag. 

 Bot., xvi. p. 257, with tab. ; Flore ies Serre.i, vi. p. 237, with fig. ; TJndcnia, v. t. 234 ; 

 Veiteh's Man. Orch. PL, viii. p. 76 ; Orchid Album, x. t. 477. 



Stn. — 0. Itigl)yanum. 



O. SERRATUM, Lindl. — A pretty species of very distinct aspect, on account 

 of its long straggling semi-soandent panicles. The pseudobulbs are oval, 6 inches 

 high or more, bearing large rigid lorate acute leaves 1 foot long, and the scape 

 twining and branched, from 6 to 12 feet long, bearing many large flowers, which 

 are bright chocolate-brown margined with yellow; the sepals, as are all -the 

 parts of the flower, are much crisped at the margins, the dorsal one reniform,. 

 and the lateral obovate, much lengthened out ; the petals smaller, ovate acute, 

 and connivent, the lip also small and hastate. It should be grown in rough 

 fibrous peat, and placed in the cool house. — Peru. 



Fig.— Sot. Mag., t. 5632; Batiim. Second Cent. Orch. PI., t. 194: Gard. Chron., 

 1850, p. 279, with fig. 



Syn. — 0. dladema. 



O. SESSILE, Lindl. — A pretty species of compact growth. It has two-leaved 

 oblong compressed pseudobulbs, the leaves lorate papery, and the flower-scapes 

 bearing panicles of large pale yellow flowers, spotted in the centre with pale 

 cinnamon colour ; these flowers are I5 inch across and nearly 2 inches deep, the 

 sepals and petals oblong, and the lip auricled with the 

 three-lobed crest smooth and hollowed out, and the 

 broad front portion dilated and retuse. This species, 

 which blooms during the spring months, and lasts in 

 bloom four weeks, will do well in the Cattleya house. — 

 Caracas : Santa Martha. 



Fig. — Paicton, Fl. 6ard., i. t. 21 ; Orchid Album, v. 

 t. 228. 



O. SPECIOSUM.— See Milionia Candida. 



O, SPHACELATUM, Lindl— A good free-growing 

 „„ . „„, . „„„ free-blooming species, with elongate ovate ancipitous 



ONCIDITJM SPHACELATUM. n , „ , -p , , , , , 



pseudobulbs, long ensiiorm leaves, and long branch- 

 ing panicles of flowers, which are bright yellow, the sepals and petals transversely 

 barred with rich deep chestnut brown on the basal half, and the roundish 



