J 20 Gxxxiii. ORCHIDE.E (rolfe). [Polystachyci. 



38. P. PolycHsete^ Krdnzl. in Engl. Jahrh. xvii. 50. Plant 

 (5-9 in. high. Stems slightly thickened below, 4-5-leaved. Leaves 

 oblong-linear, obtuse, 2 J-5 in. long, 3-5 lin. broad. Scapes pubescent ; 

 racemes erect, simple, very dense. Bracts linear-setaceous from a 

 slightly broader base, deflexed, lJ-2 lin. long. Pedicels 1 lin. long. 

 Flowers greenish- white. Dorsal sepal ovate, acute, f lin. long ; lateral 

 triangular-ovate, mucronate-acuminate. Petals linear, acute, 3-4 lin. 

 long. Lip trilobed, | lin. long ; side lobes rounded, auriculate ; front 

 lobe ovate-lanceolate, acute ; disc a little hairy. Column stout, J lin. 

 long. Chin saccate-oblong, obtuse, f lin. long. Capsule elliptical, 2 lin. 

 long.— Kranzl. in Engl. Pfl. Ost-Afr. C. 155. 



"Upper Guinea. Cameroon Mountains, in the primaeval forest, West of Buea, 

 4200 It., Preuss, 881. 



M[ozamb< Sist. German East Africa : Bukoba, on Lake Victoria Nyanza, 

 Stuhlmann ! 



Kranzlin identifies the Western and Eastern plants together. I have only seen 

 tlie latter, from which the above description is taken. 



39. P. setifera^ LincU. inJourn, Linn. Soc. vi. 130. Stems short, 

 slightly thickened below, 2-3-leaved. Leaves lanceolate or oblong- 

 lanceolate, subobtuse, 3-7 in. long, 7-12 lin. broad. Scapes about 9 in. 

 long. Panicles small, with about 2 side branches, puberulous. Bracts 

 setaceous-acuminate from a broader base, 1-2 lin. long. Pedicels f lin. 

 long. Flowers puberulous, dull purple. Dorsal sepal oblong-lanceolate, 

 acuminate, 1 J lin. long ; lateral ovate-oblong, setaceous-acuminate, 

 2 lin. long. Petals linear, acuminate, 1 lin. long. Lip subentire, ovate, 

 subacuminate, 1| lin. long, submembranous, with a narrow, slender, 

 central keel. Column stout, J lin. long. Chin saccate-oblong, obtuse, 

 i lin. long. 



Xio'wer Cruinea. Princes Island, Barter, 1984 ! 

 Remarkable for the setaceous sepals and the thin, ovate lip. 



40. P. albo-violacea^ Kranzl. in En^l. Jahrh. xvii. 50. Pseudo- 

 bulbs approximate, ovate-oblong, |-1 in. long, 2-3-leaved. Leaves 

 linear or oblong-linear, obtuse, lJ-3 in. long (or longer, fide Kranzlin)^ 

 ;> lin. broad. Scapes 4 in. long ; racemes simple, puberulous. Bracts 

 narrowly setaceous from a broader base, reflexed, 1 J in. long. Pedicels 

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

 lateral triangular-ovate, acuminate, much larger than the dorsal. 

 Petals linear, subacute, | lin. long. Lip trilobed, 1 lin. long; side lobes 

 roundish-oblong or auriculate ; front lobe ovate-lanceolate, acute, longer 

 than the side lobes ; disc naked, but with a small callus between the 

 side lobes. Column stout, J lin. long. Chin saccate-oblong, obtuse, 

 1 lin. long. 



Upper Cruinea. Cameroons : Barombi, on trees, Preuss, 298 ! 



41. Pe coriscensis, Reichh. f. Otia Bot. Hanib. ii. 112. Plant 

 3-5 in. high. Stems very short, slightly thickened, 3-4-leaved. Leaves 

 oblong or subspathulate-oblong, obtuse, 1 J-3J in. long, 3-6 lin. broad. 



