186 xc. convolvulacetE (baker and rendle). [fyomoea. 



dilated and densely hairy, \\ in. long at the base. Fruit and seeds 

 not seen. — Rivea pringsheimiana, Dammer in Engl. Pfl. Ost-Afv. CL 

 334. 



Mozamb- Dist. German East Africa : TJsambara : Bulua, Gonja (Gonya) 

 Mountain, 5000 ft., Hoist, 4337 ! 



119. I. citrina, Hallier f. in Bull. Herb. Boiss. vi. 547. An erect 

 shrub. Young branches slender (scarcely 1 lin. thick), terete, clothed 

 with grey tomentum, leafy and flowering above, the older stouter and 

 glabrous, with an irregularly rugose cortex. Leaves cordate-orbicular ? 

 1^ in. long and nearly as broad, obtuse or subemarginate, mucronate, 

 entire, clothed with yellowish silky hairs above and with whitish-grey 

 tomentum beneath ; petiole slender, terete, tomentose like the peduncle, 

 1-1J- in. long. Flowers in pairs on axillary peduncles, 1| in. long; 

 bracts 2, large, persistent, white tomentose on the outside, broadly 

 orbicular-spathulate, shortly clawed, § in. long and broad, forming an 

 involucre around the calyces, § in. broad. Sepals resembling the 

 bracts, broadly orbicular, tomentose, the outermost above -i- in. long, 

 the inner gradually smaller. Corolla pale yellow, nearly 1^ in. long, 

 broadly tubular funnel-shaped ; midpetaline bands plainly limited, 

 finely pilose on the outside. Stamens unequal, the two longer, like the 

 style, half as long as the corolla. Ovary long, fusiform, glabrous. 



Nile land. Somaliland ; Laku, Keller, 235. 



120. I. brasseiiriana, Be Wild. Etudes Fl. Katanga, 115. Stem 

 climbing, subcylindrical, greyish, densely clothed with spreading hairs. 

 Leaves broadly oval or trilobed, If to 2|- in. long, \\ to 2 in. broad, base 

 cordate, densely hairy on both surfaces, covering denser and silvery on 

 the lower surface ; petiole about \ in. long, densely hairy. Peduncles 

 l-. 1 — 2h in. long, hairy; bracts small, caducous; flowers 2-4; pedicel 

 hairy, J— § in. long. Sepals oval, acute, about | in. long, densely 

 hairy outside, margins ciliate. Corolla ample, purple, If in. long. 

 Ovary glabrous. 



South Central. Congo Free State : near Lake Moero, Verdiek. 



" Recalls I. Grantii, but differs in the smaller leaves, the longer-stalked inflores- 

 cence, the flowers springing from the same point, not arranged in a dichotomy, the 

 pointed sepals and the longer and denser hairy covering." 



121. I. shirambensis, Baker in Kevj Bulletin, 1894, 72. Perennial, 

 glabrous. Stems stout, woody, rugulose, climbing ; final branchlets 

 slender. Leaves orbicular, long, acuminate, base shallowly refuse, more 

 or less pubescent on both surfaces, H-lf in. long, about 1| in. broad. 

 Cymes laxly few- to many-flowered, sessile or shortly peduncled ; pedicels 

 slender, flexuose, J-f in. long ; bracts minute. Calyx glabrous, 5 lin. 

 long; sepals coriaceous, ovate, cuspidate. Corolla funnel-shaped, 1| in. 

 long, glabrous outside, white, with a bright lilac throat. Capsule 

 glabrous. Seeds with long spreading tawny hairs. — /. schirambensis, 

 Hallier f. in Engl. Jahrb. xxviii. 49. 



