192 XC. CONVOLVULACE^E (baker and rendle), 



brown, 4-valved; valves thick, " testaceo-lignous." Seeds lin'. long, 

 clothed, except on the black glabrous back, with soft whitish ""dvous 

 silky wool, § in. long. 



Wile Land. Somaliland : near Banas, Riva, 1437, 1438 partly. British East 

 Africa : Athi Plains, PospiscMl. __ 



133. I. stenosiphon, Hallier f. in Situngsber. AJcad. Wiss. 

 Wien. cvh.' 50. A shrub; steins terete, glabrous, some sterile, 

 slender, whip-like and climbing, with a smooth thin ochre-coloured 

 separable bark ; others more robust, straight, erect, densely leaved and 

 flowering, greyish, bark rugose. Leaves cordate-ovate, emarginate, 

 mucronate, up to 2J in. long by a little over 2 in. broad, spauely 

 puberulous on the upper surface and on the nerves beneath ; latev \ 

 nerves about 10 each side of the flattened narrowly winged (on ohe 

 lower surface) midrib, conspicuously reticulate beneath the meshes of the 

 network conspicuously dotted with numerous dark circular glands ; 

 petiole slender, nearly as long as the leaf, glandular on each .side below 

 the blade. Pechincles on very short branchlets, solitary or few and 

 fascicled and almost obsolete ; pedicels f-2 in. long, conspicuously 

 clavate in fruit. Sepals coriaceous, elliptic^ obtuse or emarginate, with 

 membranous pellucid margin, the outer much shorter, ^ to barely 1 in. 

 long in flower ; much enlarged in fruit becoming brittle and laxly 

 enveloping the capsule. Corolla large, pale greenish-yellow or cream- 

 colour, salver-shaped ; tube very narrow, 4-5 in. long, 1-1| lin. in diam. ; 

 limb about 1^ in. broad; midpetaline areas with white wool on the 

 outside at the apex. Stamens and style projecting considerably from 

 the tube ; anthers 2 lin. long. Ovary glabrous, 4-celled ; cells 1-ovuled. 

 Capsule elongated cone-shaped, dirty brown, cuspidate with the long- 

 persistent style-base, If in. long, including the cusp (about h in. long), 

 about i in. broad ; pericarp thin, brittle, not splittiirg"4nto valves, 3- 

 to 1 -celled by abortion ; septa thinly membranous l |iot separating from 

 the pericarp. Seeds oblong, about -^ in. long and ^ in. thick, obscurely 

 obtusely trigonous, dirty brown, velvety with a tuft of longer ochre- 

 coloured hairs around the hilum. — Rivea stenosiphon, Hallier f. in 

 J-fhrb. Hamburg. Wissensch. Anstalt. xvi. Beih. 3, 15. Rivea (sect. 



' ' Legendrea) sp., Hallier f. in Engl. Jahrb. xviii. 158. 



Wile Land. Britisli East Africa : north of Taveta, PospiscJiil. 



Mozamb. Dist. German East Africa : Massaini, Fischer, 416 : Usagara ; 

 Mlali, Stuhlmann, 198; Pangusi, Stuhlmann,. 427; Muansa, Stuhlmann, 4151. 

 Britisli Central Africa : Khodesia ; Matoppo Hills, 5000 ft., Eyles, 58 ! 



The corolla resembles that of I. Bona-nox, hut is somewhat smaller ; there is no 

 suggestion in the flower of a thickening of the pedicel which characterises the 

 fruiting stage of that spec : es. Our plant is evidently very near I. longituha, 

 Hallier f ., but is distinguished by its more typically cordate leaves, rather longer 

 corolla-tube ana exserted stamens and style. 



134. I. bullata, Oliv. in Trans. Linn. Soc.ser. 2. Bot. ii. 343, t. 62. 

 Stems robust, woody, hollow, wide-climbing, at first slightly pubescent. 

 Leaves distinctly petioled, 3-4 in. long and broad, cut down nearly to 

 the midrib into 7-9 obtuse or subacute linear lobes, the longest 2 in. 



