ODONTOGLOSSUM. 



461 



0. retusuni, Lindlcy. — Though not a large-flowered mag- 

 nificent plant, this species is well worth a place in a collection 

 on account of the profusion of 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, bilamellate at the base, in some varieties yellow, 

 and in others of the same colour as the sepals and petals. It 

 is very rare. — Ecuador. 



0. Roezlii, Bchh. f. — One of the most beautiful of all the 

 Odonto<ilossums, producing blossoms twice a year ; it is a very 

 near ally and a close rival of O. vexillanum, and yet how dif- 

 ferent ! The plant has small narrow ovate acutely margined 

 pseudobulbs, long linear-lanceolate light green leaves, and 

 large flat sweet-scented flowers from two to three inches in 

 diameter, and borne one to three on a scape ; the obovate 

 oblong acute sepals are pure white, and the broader petals 

 are white with a bold purple spot at the base ; the lip is 

 obcordate, two and a quarter inches in breadth, white with a 

 yellowish stain, tinged with red around the crest. The flowers 

 last from four to five weeks in perfection if kept free from 

 damp. There are numerous varieties of this charming species, 

 many of which make fine subjects as exhibition plants ; some 

 of them are much lighter than the one here described, but 

 they are all worth cultivating. It is best grown in the 

 Cattleya house, and requires an abundance of moisture. It is 

 named in honour of M. Roezl, being one of his own intro- 

 ductions. — New Grenada. 



Ym.—Xenia Orch., ii. t. 183; Bot. Mag., t. 6085; Batem., Mon. Odont., 

 t. 30 ; Floral Mag., 2 ser., t. 90 ; Orchid Album, ii. t. 64 ; Gai-d. Chron., 

 1873, 1302, fig. 2G9. 



0. Roezlii album, Ball. — A charming variety of the last- 

 named species, the flowers of which are pure white with the 

 exception of a blotch of pale lemon yellow on the basal part 

 or disk of the lip. This very desirable variety lasts a long 

 time in perfection, and requires the same treatment as 0. 

 Pioezlii. — New Grenada. 

 Fig.— Floral Mag., 2 ser., t. 164. 



0. rossum, Lindley. — This very pretty little species is when 

 well grown a charming plant. It is evidently closely allied to 

 Mesosinnidium vulcanicum, but its flowers are not so brilliant 



