ODONTOGLOSSUM. 



589 



flowers it produces during winter. It is dwarf-growing, with linear-lanceolate 

 papery leaves, and an inflorescence consisting of a branching panicle bearing 

 upwards of a hundred flowers. The sepals and petals are lanceolate acute, 

 orange-red tinged with yellow ; the lip oblong retuse, bi-lamellate at the base, 

 in some varieties yellow, and in others of the same colour as the sepals and 

 petals. It is very rare.— Ecuador. ■"■.''■■ ■;' 



O. RHYNCHANTHUM, Rchh. f. — Supposed to be a natural hybrid between 

 0. purum and 0. IJmdleyanum. " Eaceme lax ; sepals and petals ligulate acute, 

 yellow with a narrow brown line, petals with a few brown spots at base, and a 

 curious lip, the anterior blade of which is narrow and acuminate." — New 

 Grenada. 



O. RIGIDUM, Lindl. — Although a very old species, this has. not mitil recently 

 been known in collections. It is described in Folia Orchidacea as follows : — ■ 

 " Panicle stiff, erect, pyramidal, with short ascending zig-zag branches, clothed 

 at the base with mucronate scales ; bracts ovate, concave, mucronate ; flowers 

 yellow, whole-coloured, with a very long jiarrow stalk to the lip." — Peru. 



O. ROEZLII.— See Miltonia Eoezlii. 



O. ROSEUM.— See Cochlioda eosea. 



O. ROSSII, Lindl. — A very pretty and desirable little Orchid of dwarf habit, 

 growing some 6 or 8 inches high. Its pseudobulbs are tufted ovate and 

 ancipitous, its leaves oblong lanceolate, 

 and its flowers borne on radical one- or 

 two-flowered scapes. The flowers are 

 about 2 inches in diameter ; the sepals 

 are linear-lanceolate acuminate, keeled, 

 greenish-yellow transversely barred 

 with brown ; the petals are oblong obtuse, 

 revolute at the tips, white with a dark 

 purple spot at the base, and the lip is 

 roundish ovate emarginate, with a cup- 

 shaped fleshy yellow crest, with two 

 blunt teeth in front. The plant produces 

 its white and purple flowers during 

 the winter in great profusion, and lasts 

 long in beauty. It is best grown in a 

 basket or on a block, but should always 

 be kept moist. — Mexico. ODONTOGliOSSUM eossii. 



Yia.Sot. Reg., 1889, t. 48 ; Maund, Botanist, v. t. 222 ; 3fuore, III. OroA. PI. 

 (^Odontoglossuni) t. 3 ; Knowles 4' ^^estc. Floral Cab., t. 129 ; Reichenbaclda, 1. 1. i. 

 Syn. — 0. acuminatum, 0. apterum. 



O. ROSSII ALBENS, H. Williams. — A fine variety of this popular Odontoglot 

 -which flowered with Eeginald Young, Esq., of Liverpool; flowers mostly in 

 pairs some 3 inches across, sepals lanceolate-acuminate, white, transversely 



