Polystachya. | CXXXIII. ORCHIDEÆ (ROLFE). 123 
3 lin. long. Flowers deep yellow. Dorsal sepal linear-ligulate, 14 lin. 
long; lateral broader than the dorsal. Petals linear, acute, 14 lin. 
long. Lip broadly dilated, trifid; side lobes triangular; front lobe 
longer than the side lobes, subretuse, apiculate; disc velvety, puberulous. 
Column very short. Chin conical, obtuse. 
Lower Guinea. Angola: Pungo Andongo; terrestrial, on high, precipitous 
rocks at Pedro de Cazella and Pedro de Canbondo, rare, and not seen under 3400 ft., 
Welwitsch, 696! 
A fruiting specimen collected on the Niger Delta, at Grand Bassa, by Vogel ! 
seems allied to the present one, but the material is inadequate for satisfactory 
determination. 
49. P. simplex, Rendle in Journ. Bot. 1895, 199. Plant about 
6 in, high. Stems subcylindrical, moderately stout, about 3-leaved. 
Leaves oblong or oblong-lanceolate, subacute, 13-3 in. long, 5-7 lin. 
broad. Scapes about 1} in. long; racemes pubescent, few-flowered. 
Bracts lanceolate, acuminate, 14-2 lin. long. Pedicels 3 lin. long, 
Dorsal sepal ovate-oblong, acute, concave, 24 lin. long; lateral triangu- 
lar-ovate, acuminate. Petals oblong-lanceolate, acuminate, 2 lin. long. 
Lip shortly unguiculate, trilobed, 2 lin. long ; side lobes rounded ; front 
lobe broadly ovate, apiculate; disc smooth with a narrow keel at the 
base. Column stout, 4 lin. long. Chin saccate-oblong, obtuse, 14 lin. 
long. 
Nile Land. British East Africa: Ruwenzori; Wimi, on rocks at the foot of 
the waterfall, 6200 ft., Scott-Elliot, 7827 ! 
50. P. confusa, Rolfe. Plant very dwarf. Pseudobulbs approxi- 
mate, ovoid, 4 lin. long, 1—2-leaved, the younger ones with two or three 
ovate, acute, protecting sheaths. Leaves spreading, oblong, subobtuse, 
1j-1} in. long, 3-4 lin, broad, narrowed at the base. Scapes erect, 
l-1% in. high, pubescent, 1 or few-flowered. Bracts ovate, acute, 1-14 
lin, long. Pedicels 2-3 lin. long. Dorsal sepal ovate-oblong, acute, 3 
lin. long; lateral broadly triangular-ovate, acute, as long as the dorsal. 
Petals linear-oblong, acute, 24 lin. long. Lip 3 lin. long, broadly 
unguiculate, trilobed; side lobes rounded; front lobe broadly ovate; 
obtuse, somewhat concave; disc puberulous. Chin broadly saccate- 
oblong, about as long as the dorsal sepal. Column stout, 1 lin. long.— 
P. capensis, Kränz]. in Engl. Pf. Ost-Afr. C. 155 (not Sond.). 
Mozamb. Dist. German East Africa: Kilimanjaro, Kifinika Volcano, 9100 ft., 
Volkens, 1892! 
Very different from P. capensis, Sond., with which Krinzlin bas identified it. 
5l. P. pachyglossa, /eichb. f. in Linnea, xli. 73. Plant 3-4 in. 
high. Pseudobulbs ovoid-oblong, 4-3 in. long, 1-2-leaved. Leaves 
oblong, obtuse 3-1} in. long. Scapes erect, simple, few-flowered, about 
l} in. long. Bracts triangular, acute, 1-1} lin. long. Pedicels 3 lin. 
long. Dorsal sepal ovate-oblong, shortly acuminate, 3-34 lin. long; 
lateral triangular-ovate, acuminate. Petals subspathulate-oblong, sub- 
obtuse, 24-3 lin. long. Lip trilobed, 3 lin. long, with a very short and 
