ODONTOGLOSSUM. 359 
3in. in diameter; the sepals and petals are white or rose- 
tinted, the sepals spotted all over, the petals only at the 
base, with deep brown spots; the lip is large, somewhat 
heart-shaped, and pure white. A native of Mexico; in- 
troduced in 1842. 
Coloured Plate; Fig. 85; Botanical Register, xxv., t. 48. 
Fig. 85. Odontoglossum Rossii, showing Habit and detached Flower 
(Habit, much reduced; Flower, 4 nat. size). 
Var. aspersum.—Flowers primrose-yellow, with chestnut- 
brown spots. 
Var. Ehrenbergi.—A small-flowered and poor variety. 
Var. Humeanum.—Sepals yellow, with cinnamon-red 
bars; parts of the flower narrower than in the type. 
0. Sanderianum.—This free-flowering species is chiefly 
remarkable for its delicious, hawthorn-like fragrance. The 
pseudo-bulbs are ovoid, compressed, two-leaved; the leaves 
rather narrow, about 1ft. long. Flower-spikes drooping, 
bearing numerous rather small flowers, with narrow sepals 
