Tas. 7058. 
SOBRALIA teucoxantua. 
Native of Costa Rica. 
Nat. Ord. OrncuipEx.—Tribe Neorriex. 
Genus Sosratia, Ruiz. §& Pav.; (Benth. et Hook. f. Gen. Pl. vol. iii. p. 390. 
Sopraiia leucorantha; caule 2-3-pedali, foliis 6-pollicaribus lanceolatis v. 
ovato-lanceolatis acuminatis, vaginis verruculosis, floribus maximis, brac- 
teis lanceolatis asperis, sepalis 3-pollicaribus lineari-lanceolatis acuminatis 
lateralibus falcato-decurvis albis, petalis brevioribus et latioribus elliptico- 
oblongis obtusis albis marginibus undulatis, labelli tubo ventricoso, lamina 
orbiculari alba fauce aurea marginibus crenato-undulatis apice 2-loba, 
basi intus aurantiaco-striolata, columna tubo labelli involuta apice 3- 
dentata. 
S. leucoxantha, Reichb. f. Beitr. Orchid. Centr. Amer. p. 68. Warner & 
Williams Orchid Alb, t. 271. 
Of the many species of this fine genus (upwards of 
fifty are known), this is one of the largest flowered ; its 
rivals being S. macrantha (Tab. 4446), S. Fenzliana, 
Reichb. f. in Bot. Zeit. 1852, p. 714, and S. xzantholeuca, 
Hort. It is very closely allied to the first of these, and 
differs chiefly in the very much smaller limb of the lip, 
and in the pure white colour of all parts of the flower 
except the disk of the lip. Minor differences are the nar- 
rower leaves of S. leucoxantha, and the rough or minutely 
warted leaf-sheaths and bracts. Both are natives of the 
Central American States, 8S. macrantha of Guatemala, and 
S. leucowantha of Costa Rica, near Porto Blanco, whence 
it was imported by Messrs. Sanders of St. Albans, to 
whom we also owe the Angraecum Germinyanum figured 
in this number. It has flowered in the tropical Orchid 
House. 
Desor. Stems tufted, reed-like, leafy, about 3 feet high, 
clothed with appressed rough leaf-sheaths. Leaves four to 
six inches long by one and a quarter to one and a half 
inches broad, sessile on the sheath, lanceolate, finely 
acuminate, closely plaited. Floral bracts lanceolate, one 
JuNE Ist, 1889. 
