110 cxxxiii. ORCHiDE^ (rolfe). [Pohjstachya. 



long. Dorsal sepal triangular-ovate, acute, 2^ lin. long; lateral 

 triangular-ovate, acuminate, carinate. Petals subspathulate-elliptic, 

 acute, 2\ lin. long. Lip trilobed, cuneate-unguiculate ; side lobes 

 semiovate, obtuse, short ; front lobe ovate, apiculate ; disc f urfuraceous, 

 with a thick fleshy callus between the side lobes. Column stout, f lin. 

 long. Chin triangular-oblong, obtuse, 1^ lin. long. — Lindl. Gen. & Sp. 

 Orch. 73 ; S. Moore in Baker, Fl. Maurit. o61. Polystachya cultriformis, 

 Spreng. Syst. Yeg. iii. 742; Kranzl. in Engl. Pfl. Ost-Afr. C. 155. 

 Dendrohium cultriforme^ Thou. Orch. lies Afr. t. 87. 



Upper Guinea. Cameroons : Buea, 3100 ft., Preuss, 1009 ! 



Mozamb. I>lst. German East Africa : Usambara ; Silai and Mbaludorf, 

 6000 ft. (ex Krdnzlin), Kilimanjaro, Marangu, 6500 ft., Folkens, 2082 ! 



A specimen from Mt. Kilimanjaro, higher slopes to 10,000 ft. above MarangQ, 

 Taylor ! is apparently the same species. 



Also from Mauritius, Madagascar, and Bourbon. 



8. P. gracilenta, Krdnzl. in Engl. Jahrh. xix. 251. Plant lG-20 

 in. high. Stem very slender, shining, 1 -leaved. Leaves linear, longer 

 than the raceme. Scapes slender, with a few sheaths ; panicles short 

 and congested, 1J-2J in. high; branches ancipitous; inflorescence 

 entirely glabrous. Bracts minute, triangular, acute, much longer than 

 the ovary. Dorsal sepal ligulate, obtuse; lateral triangular, obtuse. 

 Petals linear-spathulate, obtuse, about as long as the sepals. Lip much 

 curved, complicate ; side lobes semiobovate, roundish, very small ; front 

 lobe oblong, short, obtuse; callus rugulose, on upper third of lip to 

 the apex. Chin conical, obtuse, lightly curved. — Kranzl. in Engl. Pfl. 

 Ost-Afr. C. 155. 



KTlle ]Land, British East Africa : Ruwenzori, 8200 ft., Stuhlmann, 2334. 



Allied to P. cuUrata, Lindl, The author describes the material as deficient, and 

 seems doubtful whether this species is distinct from the preceding one, though the 

 flowers are described as twice as large. I have not seen it. 



A specimen from Butagu, Ruwenzori, 8000 ft., Scott-Ellioty 8050 ! is apparently 

 allied to this species. 



9. P^tenuissima, Kranzl. in Engl. Jahrh. xix. 250. Stems very 

 slender, J-1 lin. broad, 1-leaved. Leaves elongate-linear, acuminate, 

 6-0 in. long, J lin. broad. Scapes slender, partly nodding, with a sheath 

 at the base ; panicles more or less secund ; branches distant ; rhachis and 

 ovary smooth. Bracts very minute, triangular. Flowers only |^ lin. 

 diam. Dorsal sepal ovate, obtuse ; lateral broadly oblong or suborbi- 

 cular, apiculate. _ Petals linear-oblong, obtuse, minute. Lip cuneate; 

 side lobes oblong, obtuse, rather large ; front lobe scarcely larger, nearly 

 orbicular ; disc with a callus on the claw. Chin galeate, bifid at the 

 apex. Capsule ovoid-oblong, shortly pedicellate, 2\ lin. long. 



Upper Guinea. Cameroons : Yaunde, ZenJcer, 609 ! 

 Remarkable for its long, very narrow leaves. 



10. P. laxiflora, Lindl. in Journ. Linn. Soc. vi. 129. Plant 

 1-1 J ft. high. Stems fairly stout, 3-4-leaved, not thickened at the 



