126 ANGR.TCDM. 



invariably French-wliite or very pale stravz-yellow. The flowering 

 season is from February to April. 



A. cryptodon. 



Stems 1 — 3 inches high with three — four obovate-ohlong leaves, 3 inches 

 long. Racemes with a russet-lirowii rachis, j^endulous, 8 — 10 inches 

 long, few flowered. Flowers 11 inch in dianicter, on short reddish 

 pedicels with all the segments first reflexed, then spreading ; sepals and 

 petals similar, linear-lanceolate, suh-acuminate, the se]ials pale orange- 

 red, the petals wliite ; lip white, suh-cordate, a}uculate ; spur slender, 

 4 — 5 inches long, pale orange-red. Column white. 



Augr.iecum cryptodon, Echb. in Gard. Chron. XIX (1883), p. 307. Ridley in 



Journ. Linn. Soc. XXI. p. 482. 



A neat dwarf species introduced by Messrs. Low and Co. from 

 Madagascar in 1882, through their collector, Curnow. It is well 

 distinguished horticulturally by its russet-brown peduncle and pale 

 orange sepals and spur. The applicability of the specific name, literally 

 '' concealed tooth/^ is obscure. 



A. eburneum. 



Stems very robust, 2 — 4 or more feet high in the orchid houses of 

 Europe, ligneous below, sheathed by the equitant bases of the leaves 

 upwards. Leaves ascending, recurved towards the tips, ligulate, 18 — 24 

 inches long, 2 inches broad, very leathery, complicate towards the base, 

 sino-ularly oblique at the apex. Peduncles robust, ascending, as long 

 ao-ain as the leaves, sheathed at each joint by a scale-like bract, racemose 

 along the distal half, 9 — 12 or more flowered. Flowers sub-distichous 

 and alternate, inverted, 3—4 inches in diameter; sepals and petals 

 similar, spreading, lanceolate, acute, light green ; lip broadly cordate, 

 abruptly acuminate, ivory-white, concave, with a fleshy longitudinal crest 

 at the base ; spur 3 inches long, green. Column very short and thick, 

 pale green. 



Angrtecum eburneum, Tliouars, Orcb. lies. Afr. t. 65 (1822). Lindl. Gen. et Sp. 



Orch. p. 245 (1832). £oL Beg. t. 1522. Bot. Mag. t. 4761. Williams' Oixh. Alb. 



I. t. 41. Godefroy's OrchidopMle, 1885, p. 168 (superbum). Eidley in Journ. Linn. 



Soc. XXI. p. 480. A. superbum, Thenars, Orch. lies. Afr. t. 62. Liudl. Gen. et. Sp. 



Orch. p. 245. A. Brongniartianum, Linden's Pesc. t. 16. 



var. — virens. 



Flowers somewhat smaller, tlie disk of the lip stained with pale 

 green. 



A. eburneum virens, Hook, in Bot. Mag. t. 5170. A. virens, Lindl. in Bot. Reg. 

 1847, sub. t. 19. Id. in Paxt. Fl. Gard. I. p. 25, figs 9 and 10. 



The origin of this remarkable orchid is thus stated by Dr. Liudley 

 in the Botanical Register for 1832, sub. t. 1522 : — " It is not 

 uncommon in the island of Bourbon, growing upon trees. 



