Phaius. | CXXXIII. ORCHIDEH (ROLFE). 45 
8. PHAIUS, Lour. ; Benth. et Hook. f. Gen. Pl. iii. 512. 
Sepals free, subequal, spreading or suberect. Petals like the sepals 
or narrower. Lip erect, concave or cucullate, entire or somewhat 3- 
lobed; side lobes embracing the column; base spurred or saccate. 
Column long, clavate ; apex 2-angled; base not prolonged into a foot. 
Anther operculate, incumbent, distinctly 2-celled ; pollinia 8, obovate 
or oblong, somewhat laterally compressed, united at the base by a 
viscid appendage. Capsules ellipsoidal-oblong.—Tall herbs, terrestrial 
or rarely epiphytic. Base of stem sometimes pseudobulbous. Leaves 
long petioled ; limb elliptical to lanceolate-oblong, acute or acuminate, 
plicate. Scapes basal or lateral, mostly erect. Flowers usually large 
and showy. Bracts lanceolate or ovate-lanceolate. 
A genus of about 20 species, extending from India and China to Australia, with 
four Mascarene representatives and a single West African one. 
1. P. Mannii, Reichb. f. Otia Bot. Hamb. ii. 118. Rhizome stout. 
Leaves long petioled, oblong- or elliptical-lanceolate, acute, 1 ft. long, 
23-3 in. broad; petioles 6-8 in. long, somewhat dilated at the base. 
Scape about as tall as the leaves; raceme about 6—8-flowered. Bracts 
lanceolate, acuminate, 14 in. long, deciduous. Pedicels 7-8 in. long. 
Sepals oblong-lanceolate, acuminate, 1} in. long, 4-5 lin. broad. Petals 
similar but a little broader. Lip 3-lobed, 14 in. long; side lobes 
narrowly oblong, acute ; front lobe oblong, acute or apiculate, much 
longer than the side lobes; spur slender, 6-8 lin. long. Column 
clavate, 10 lin. long; wings rounded. 
Lower Guinea. Gaboon: Sierra del Crystal, Mann, 1624! 
9. CALANTHE, R. Br. ; Benth. et Hook. Gen. PI. iii. 520. 
Sepals subequal, free, usually widely spreading. Petals like the 
sepals or narrower. Lip usually more or less adnate to the column ; 
limb spreading, 3-lobed, with the terminal one often deeply bilobed, disc 
variously callous or lamellate; base mostly extended into a slender spur 
(in the African ones invariably so). Column short, without a foot ; 
wings usually united to the sides of the column. Anther subterminal, 
operculate, incumbent, 2-celled ; pollinia 8, oblong or obovate, some- 
what compressed, the caudicles often somewhat attenuate and united by 
a viscid appendage. Capsules elliptical-oblong.—Terrestrial herbs, 
with short leafy stems, sometimes pseudobulbous at the base. Leaves 
2 to several, petiolate; limb elliptical- to oblong-lanceolate, acute 
or acuminate, plicate. Scapes erect from the rhizome, often tall, with 
a number of sheaths towards the base. Flowers in dense or loose 
racemes, usually showy. Bracts lanceolate or ovate-lanceolate. 
A genus of about 70 species, most numerous in Tropical Asia, extending to Japan 
and Australia, and sparingly represented in Africa, the West Indies, and Central 
America. 
Side lobes of lip auriculate, scarcely 1 lin. long. 
Side lobes of lip as broad as long; claw triangular at the base 1. C. corymbosa. 
Side lobes of lip longer than broad ; claw oblong at the base 2. C. delphinioides. 
Side lobes of lip linear or oblong, 2 lin. long : , . 3. CG Volkensii, 
