Polystachya.'] cxxxiii. orchide^ (rolfe). 115 



Fruiting specimens collected in Sierra Leone, on fig-trees in Freetown cemetery, 

 Barter ! without locality, Scott-JElliot ! and Niger Delta : Brass River, Barter, 1856 ! 

 the latter marked as having "deep purple flowers," apparently represent a closely allied 

 species. A similar specimen from Lagos, Milieu ! is also allied, but none of them are 

 determinable in their present condition. 



22. P. Buchananiy Rolfe in Kew Bulletin, 1893^ 335. Plant 

 J-l| feet high. Stems short, slightly thickened, 2-4-leaved. Leaves 

 lanceolate-oblong, subobtuse, 4-8 in. long, f-lf in. broad. Scapes 

 J-1 J ft. long, much branched above ; branches dense, many-flowered, 

 puberulous. Bracts triangular-subulate, acuminate, recurved, 1-lJ 

 lin. long. Pedicels 2J-3 lin. long. Flowers light yellow to green, 

 with a faint trace of purple- brown neai^ the margins of the sepals. 

 Dorsal sepal ovate, acute, or apiculate, 1 J lin. long ; lateral triangular- 

 ovate, apiculate, much larger than the dorsal. Petals spathulate-linear, 

 subobtuse or apiculate, l\ lin. long. Lip trilobed, 1 J lin. long ; side 

 lobes ovate-oblong, obtuse ; front lobe orbicular-ovate ; apex obtuse or 

 emarginate, reflexed ; disc farinaceous-pubescent ; callus a linear, fleshy 

 keel from the middle to near the base. Column stout, \\ lin. long. 

 Chin saccate-oblong, obtuse. If lin. long. Capsule oblong, 6-8 lin. 

 long. 



Wile Xiand. British East Africa : Giryama Mountains, Taylor ! 



UXozamb. I>l8t. British Central Africa : cultivated specimens ! 



Described from a cultivated plant sent from British Central Africa by Mr. J, 

 Buchanan, C.M.G., to Mr. J. O'Brien, of Harrow-on-the-Hill. Originally flowered at 

 Glasnevin in 1889. 



Taylor's specimen is in fruit only, but I think it belongs to this species. 



23. P. rufinula^ Reichh. f. in Gard. Chron. 1879, xi. 41. Pseudo- 

 bulbs short, thickened at the base, 2-2J in. long, 3-leaved. Leaves 

 lanceolate-oblong, subobtuse, 3J-6 in. long, J-1 in. broad. Scapes 6-8 

 in. or more long, branched above or rarely simple, many-flowered ; 

 branches slightly puberulous. Bracts subulate-lanceolate or ovate, 

 acuminate, 1-2 lin. long. Pedicels 2-3 lin. long. Dorsal sepal ovate, 

 apiculate, 1^-2 lin. long ; lateral triangular- ovate, much larger. Petals 

 linear, acute, 1^ lin. long. Lip trilobed, 2J-3 lin. long; side lobes 

 roundish-oblong ; front lobe quadrate-suborbicular ; apex emarginate or 

 shortly bilobed ; disc farinaceous-pubescent, with a central linear-oblong 

 thickened callus. Column stout, 1 lin. long. Chin saccate-oblong, 

 obtuse, lJ-2 lin. long. Capsule elliptical-oblong, 6-7 lin. long. — 

 Reichb. f. in Otia Bot. Hamb. ii. 76. 



IMEozamb. I>ist. Zanzibar, cultivated specimens ! 



Only known from garden specimens, which are said to have been sent home by 

 Dr. Kirk. It originally flowered in the collection of Captain Hincks, in 1879. 



24. P. zanguebarica, Rolfe. Plant 6 in. or more high. Leaves 

 oblong-lanceolate, subobtuse, 5 in. long, 6-9 lin. broad. Scapes panicu- 

 late, pedunculate, 6 in. long. Bracts triangular, acuminate, 1 lin. long ; 

 Pedicels 3 lin. long. Dorsal sepal ovate, acute, concave, IJ lin. long; 



