112 CXXXIII. ORCHIDEH (ROLFE). | Polystachya. 
broader base, recurved, 14-2 lin. long. Dorsal sepal ovate-oblong, 
acute, 24-3 lin. long; lateral triangular, acuminate. Petals sub- 
spathulate-lanceolate, acute, 24 lin. long. Lip 4 lin. long, cuneate- 
unguiculate at the base ; limb broadly ovate or subtrilobed ; side lobes 
broadly rounded ; front lobe ovate, subacute, undulate, recurved ; dise 
smooth with a pair of parallel linear-oblong calli in the centre. Chin 
saccate-oblong, obtuse, 3 lin. long. Capsule oblong, 10-13 lin. long. 
Nile Land. British East Africa: Ruwenzori; Wimi, 7000-8000 ft., among 
tree-ferns, Scott-Elliot, 7897! Butagu, 9000-10,000 ft., among heather, Scott- 
. Elliot, 7958! 
14. P. Rendlei, Rolfe. Plant 3-3 ft. high. Stems cylindric, 
2-5-leaved. Leaves linear—oblong, obtuse, 2-3% in. long, 4-5 lin. 
broad. Panicles 14-2 in. long, many-flowered. Bracts triangular- 
ovate, acute or acuminate, 1-24 lin. long. Dorsal sepal triangular- 
ovate, acute, 2} lin. long; lateral broadly triangular, acute. Petals 
subspathulate-lanceolate, acute, with narrow base, 2} lin. long. Lip 
3 lin. long, unguiculate; limb obscurely trilobed; side lobes very 
broadly rounded; front lobe small, oblong, obtuse ; disc puberulous ; 
crest central, broadly oblong with raised margins. Chin saccate-oblong, 
obtuse, 3 lin. long. Capsule oblong, 8—11 lin. long.—Polystachya, n. sp. 
Rendle in Trans. Linn. Soe. ser. 2, iv. 46. 
Mozamb. Dist. British Central Africa: Mlanje, Whyte! Zomba, 6000-7000 
ft., Kirk ! 
The plant turns black in drying. 
15. P. Kreenzlinii, Zelt, Plant 9-12 in. high. Stems cylin- 
dric, 5-5-leaved. Leaves oblong, minutely bidenticulate, 24-4 im. 
long, 6-9 lin. broad. Panicles nearly sessile, 14-2} in. long. Bracts 
triangular-ovate, acute, 14-2 lin. long. Pedicels 4 lin. long. Dorsal 
sepal triangular-ovate, acute, 3 lin. long; lateral broadly triangular; 
apex faicate-acuminate. Petals subspathulate-lanceolate, acute, 24 lin. 
long. Lip 3 lin. long, unguiculate, subtrilobed ; side lobes broadly 
rounded ; front lobe triangular, acute ; disc puberulous with a central, 
roundish-oblong tubercle. Column stout, $ lin, long. Chin saccate- 
oblong, obtuse, 2} lin. long.—P. shirensis, Kränz), in Engl. Pfi. Ost- 
Afr, C. 155 (not Reichb. f.). 
Mozamb. Dist. German East Africa: Usambara; Mascheua, 6200 ft., on 
trees, Holst, 8748! 
Very different from D shirensis, Reichb. f., to which Kranzlin refers it, It turns 
black in drying, and is near P, Rendlei, Rolfe, and P, imbricata, Rolfe. 
16. P. imbricata, Rolfe in Kew Bulletin, 1893, 172. Plant 4-6 
in. high. Stems erect, 2-3-leaved. Leaves oblong-linear, acute, 3-54 
in. long, 2-6 lin. broad. Inflorescence a dense, branched, congested 
panicle, 1-4 in. long. Bracts ovate, acuminate, imbricate, rigid, 1-2 
lin. long. Pedicels 3 lin. long. Dorsal sepal ovate-oblong, acute, 3 lin. 
long; lateral triangular, acuminate. Petals subspathulate-oblong, 
subobtuse, 2 lin. long. Lip trilobed, 3 lin. long, broadly semi- 
ovate, obtuse ; side lobes broadly rounded ; front lobe triangular-ovate, 
