38 NEW AFRICAN CONVOLVULACEffi. 



Ipomoea Britteniana, sp. ii. Volubilis, caule glabro tenui, 

 foliis laxis exacte cordatis acuminatis, veuis prominulis sparse 

 pilosis, margiue scabridula et ciliolata : pedunculo brevi petiolo 

 subsequante, floribus ad 7 subumbellatis, breviter pedicellatis, 

 bracteis minutis ovatis ; sepalis crassiusculis glabris subcetpialibus, 

 ovatis obtusiusculis, exterioribus verruculosis ; corolla tubuliforme 

 superne ampliata, areis mesopetaliuis 6-lineatis, valde distinctis ; 

 stamiuibus intequaiibus in basi lata et supra pilosis, polliue rotimdo, 

 ecbinulato ; stigmate capitato ; capsula bruuiiea tenui glabra bre- 

 viter apiculata, seminibus 4 glabris cuneiformibus. 



Hab. Ngatana, TauaKiver plains, Greyory, 1893. Hb. Mus. Brit. 



A slender climber, with leaves 1-1| in. long and 10-12 lines 

 broad, often turned back at their insertion on the petiole (about 

 ^ in. long). The strong scabridulous peduncle is 6 lines long, the 

 smooth pedicels 3-5 lines. The calyx is nearly i in., the corolla 

 less than 1 in. long, the tube 1^ lines \n diameter. The five stamens 

 vary from 2^ to 3^ lines in length. The roundish light brown cap- 

 sule is about 2 Imes in diameter ; the blunt and flattened wedge- 

 shaped brown seeds are quite smooth. 



Near I. obscura Ch., but distinguished by its quite smooth seeds, 

 the greater number of flowers in the umbel, and more acuminate 

 minutely ciliolate leaves. Is also closely allied to /. ophthalnmntha 

 Hallier, but agani separated by its smaller differently-shaped gla- 

 brous light brown seeds. 



Ipomoea Greenstockii, sp. n. Suffrutex humilis hirsutula, 

 ramis lignosis brevibus tenuibus teretibus ; foliis densis linearibus 

 vel lineari-oblougis apiculatis, in costa mediaua plicatis, breviter 

 petiolatis ; floribus paucis maguis subsessilibus, foliis circumdatis ; 

 bracteis linearibus brevibus; sepalis 2 exterioribus majoribus ovato- 

 lanceolatis, interioribus angustioribus acuminatis, et qua obtectis 

 glabris ; corolla glabra mfundibuliforme purpurea, areis meso- 

 petaliuis angustis lineis 2 conspicuis valde delimitatis ; stamiuibus 

 inaequalibus, poUine sphserico echinulato ; stigmate capitato. 



Hab. Pilgrim's Best, Transvaal, liev. IF. Greenstock, 1879. 

 Herb. Mus. Brit. A plant in Herb. Kew (Wood, Natal, No. 4490) 

 is, I believe, the same. 



A small bushy plant 3-6 in. high, the thin wiry branches bearing 

 numerous leaves, which reach 1^ in. in length, with a breadth of 

 1^-3^ lines, and are densely somewhat stiffly hairy, except on the 

 upper surface, which is protected by the upward folding of the leaf 

 along the midrib. The two or three large flowers are in the centre 

 of the plant ; the short pedicel, bracts, and calyx, where exposed, 

 bear hairs similar to those by which the leaves and branches are 

 invested. The sepals ara 7 lines long, the outermost the broadest 

 (3 lines) and subacute, the others successively narrower, and in- 

 creasingly acuminate. The corolla is 1| in. long by 1|- diameter at 

 the mouth. The five stamens are all unequal, 6^-8 lines in length, 

 two being conspicuously longer than the rest ; the style, with its 

 capitate stigma, is intermediate in length between the shorter and 

 longer stamens. 



is near the ISouth African /. argyreoides Choisy, but distinguished 



