84 xc. convolvulaceje (baker and ejendle). [Prevostea. 



Lower Guinea. Lower Congo : Mayombe, Cabra, 88, 92. 



I have not seen this species, but from the description it is evidently very closely 

 allied to P. Heudelotii, scarcely differing, except in the somewhat larger sepals, 

 unless we accept the measurement given for the bracts. — A. B. R. 



Imperfectly known species. 



6. P. Poggei, Dammer ex Eallier f. in Mem. Soc. Pot. Belg. xxxvii. 

 pi. 1. 88 (name only). 



South Central. Congo Free State : Lunda ; Mukenge, Pogge, 1172, 1090. 



12. DIPTEROPELTIS, Hallier f. in Jahrb. Hamb. Wiss. Anstalt. xvi. 

 Beiheft. 3, 4, cum tab., and in Engl. Jahrb. xxviii. 28. 



Sepals 5, free, imbricate, unequal, the two outer ovate, longer and 

 broader than the three inner, very accrescent, and finally orbicular- 

 reniform, looking like a wing to the capsule. Corolla much larger than 

 the calyx, campanulate, deeply 5-fid. Stamens inserted low down in 

 the corolla ; filaments filiform ; anthers oblong. Disc small, cupular. 

 Ovary conical, 1 -celled, 2-ovuled ; style deeply bifid ; stigmas linear- 

 oblong. Capsule small, ovoid-conical, splitting from the base into 

 linear scales. — -A climbing shrub with elliptic-obovate, weakly acuminate 

 leaves, with entire to emarginate base. Flowers small in terminal or 

 axillary narrow panicles, bearing remote, solitary or paired cincinnous 

 cymes ; bracts and bracteoles minute, linear. 



Endemic, monotypic, 



1. D. poranoides, Hallier f., II. cc. 5, 29. A climbing shrub. 

 Leaves elliptic-obovate, 2|— 4 in. long by half as broad, generally more 

 or less acuminate, weakly mucronate, base rounded to emarginate, 

 glabrescent on the upper surface, sparsely shortly hairy beneath, 

 especially on the veins ; lateral veins 6-7 on each side of the midrib, 

 joining in intramarginal arches. Panicles axillary, long-peduncled, 

 above a foot long, laxly many-flowered ; bracts minute, linear. Outer 

 sepals lh lin. long and broad, reaching li- in. long by 1| broad in the 

 fruit. Corolla small, white ; lobes 4 lin. long by 3 lin. broad, 

 ferrugineo-tomentose outside. Capsule 3 lin. long. 



Upper Guinea. Cameroons : Lolodorf , 2000-2500 ft., Siaudt, 287 ; Zenker, 

 1383 ! Bipinde, Zenker, 1781 ! 



13. POEANA, Burm. ; Benth. et Hook. f. Gen. PI. ii. 876. 



Sepals subequal, oblong, very accrescent, finally rigid and spreading. 

 Corolla campanulate or funnel-shaped ; limb plicate, subentire or 

 shortly lobed. Stamens included or slightly exserted ; filaments linear 

 or filiform. Pollen unarmed, ellipsoid with 3 longitudinal folds. Disc 

 annular or absent. Ovary 2-celled, 2- or 4-ovuled ; style long or short, 



