118 CXXXIII. ORCHIDEÆ (ROLFE). [Polystachya. ` 
2 lin. long, broadly unguiculate, subtrilobed; side lobes broadly 
rounded ; front lobe broadly ovate, subobtuse or apiculate ; disc slightly ` 
verrucose and with a pair of obscure keels. Column stout, 4 lin. long. ; 
Chin oblong, obtuse, 14 lin. long. 
Upper Guinea. Cameroon Mountains, 4000-6000 feet, Mann, 2113 in part! 
32. P. golungensis, Reichb. f. in Flora, 1865, 185. Plant 10 in. 
high. Stems short, slightly swollen at the base, 2—3-leaved. Leaves 
linear or oblong-linear, obtuse, rather rigid, 14-4 in. long, 3-4 lin. 
broad, ‘‘ canaliculate, faleate, curved” (Welwitsch). Scapes puberulous, 
somewhat branched above ; flowers densely arranged on the branches. 
Bracts broadly triangular-ovate, acute, } lin. long. Pedicels 1 lin. long. 
Dorsal sepal ovate, subobtuse, 2 lin. long; lateral broadly triangular- 
ovate, obtuse. Petals oblong-linear, } lin. long. Lip trilobed, 14 lin. . - 
long; side lobes oblong, obtuse; front lobe broadly ovate, obtuse op `. 
emarginate, much larger than the side lobes; disc puberulous and with ` 
a high keel at the base. Column stout, 4 lin. long. Chin saccate, ` 
obtuse, 1 lin, long. Capsule elliptic-oblong, 2} lin. long.—Reichb. 
f. Otia Bot. Hamb. i. 60. 
Lower Guinea. Angola: Golungo Alto, “the commonest of all orchids in this 
region, and not infrequent on old branches of Adansonia,” Welwitsch, 674! 
South Central. Monbuttu, Schweinfurth, 3450! 
Schweinfurth’s Monbuttu specimen has a dwarfer scape and shorter capsules, s0 
that its identity is a little uncertain. - 
33. P. ramulosa, Lindl. in Bot. Reg. 1838, Misc. 76. Stems 
very short. Leaves subradical, lanceolate-oblong or elliptic-oblong, 
subacute or apiculate, 3-5 in. long, 10-13 lin. broad. Scapes 6-9 in. 
long, branched above; branches puberulous. Bracts ovate-lanceolate, 
acuminate or subulate-acuminate from a broader base, 4—3 lin. long. 
Pedicels 1 lin. long. Dorsal sepal ovate-oblong, apiculate, ł lin. long; 
lateral obliquely ovate, falcate-apiculate, broader. Petals linear-oblong, 
apiculate, over 4 lin. long. Lip trilobed, 2 lin. long ; side lobes ovate, 
apiculate, or broadly rounded-auriculate ; front lobe ovate, apiculate, 
a little longer than the side lobes; disc glabrous. Column oblong, 
scarcely } lin. long. Chin oblong, subobtuse, ł lin. long.—Walp. Ann. 
vi. 643; Kränzl. in Mitth. Deutsch. Schutzgeb. ii. (1889) 156. 
Upper Guinea. Sierra Leone, cultivated specimens, Loddiges ! Ashanti: 
Assin-Yan-Coomassie, on high trees, Cummins ! 
The side lobes of the lip are more rounded and auriculate in Cummins’ Ashanti 
specimens, but otherwise the two plants seem identical. 
34. P. nitidula, Reichd. f. in Flora, 1867, 114. Plant 5-6 in. 
high. Stems scarcely swollen at the base, 3-leaved. Leaves linear- 
oblong, acute, 14-3 in. long, 4—5 lin. broad, nitidulous on both sides. 
Bracts broadly triangular-ovate, acuminate, ł lin. long. Peduncle 
densely vaginate, with scarious acute sheaths; branches of panicle 
puberulous, subflexuous, scarcely branched. Pedicels 14 lin. long- 
Flowers pale purple or violet-purple, 14 lin. long. > Lip very short, 
