198 xc. convolvulace.e (baker and rendle). [Ipomvea. 



145. I. urbaniana, Hallier f. in Sitzungsb. Akacl. Wien. Math.- 

 Nat. cvii. 52. Stem climbing, somewhat sparsely covered like the 

 peduncle and petiole with short adpressed hairs. Leaves thin and 

 papery when dry, broadly oval to ovate, shortly acute or acuminate, 

 base rounded, reaching 6 in. long by 4 in. broad, glabrescent and 

 granular on the upper surface when mature, sparsely adpressed pilose 

 beneath; lateral veins about six each side, slender and slightly pro- 

 minent on the upper surface ; petiole shorter than the blade (up to 

 3^ in. long) glandular just below the blade. Peduncle up to 5 in. long, 

 bearing a dense-flowered cyme. Sepals narrowly linear-lanceolate, 

 acute, 5 lin. long, barely 1 lin. broad at the base, the back covered with 

 short adpressed hairs. Corolla narrowly funnel-shaped, rose-coloured, 

 2|— 2f in. long ; midpetaline areas sparsely covered with short 

 adpressed hairs and with a short apical tuft. Disc large cupshaped, 

 covering the globose ovary. Fruit and seeds unknown. — Rivea 

 urbaniana, Hammer in Engl. Pfi. Ost-Afr. C. 331. 



Mozamb. Dist. German East Africa : Usambara ; Doda, Hoist, 2978 ! 



146. I. spathulata, Hallier f. in Ann. Istit. Bot. Roma, vii. 234. 

 A partly climbing shrub ; branches robust, terete, yellowish, covered 

 when young like the petioles and peduncles with dense spreading grey 

 pubescence, elongated into leafless climbing shoots. Leaves large, 

 orbicular-cordate, obtuse, herbaceous, subpalmately 7 -nerved at the 

 base, subglaucous-green above and densely clothed with minute papilla?, 

 rather silky beneath with dense adpressed grey pubescence, 2| in. long, 

 3|- in. broad ; petiole up to 2 in. long. Peduncles solitary in the leaf- 

 axils, robust, terete, nearly 3 in. long, twice dichotomous, the two 

 primary branches (nearly 3 in. long) bearing each a pair of cincinni up 

 to 2 in. long. Bracts broadly ovate-spathulate, yellowish-green with 

 soft grey hairs, 0-7 lin. long and nearly 5 lin. broad. Flowers large, 

 subsessile. Sepals pale green, grey silky at the base, unequal, the two 

 outer longer, spathulate, 5 lin. long, 2 to 2h lin. broad below the apex, 

 median sepal more narrowly spathulate, the two inner narrower and 

 nearly one-third shorter, linear from a broader base. Corolla 

 (unopened) more than 1\ in. long, with grey stiffish hairs except on the 

 commissural segments ; midpetaline areas bounded by strong nerves. 

 Capsule and seeds exactly as in /. chrysosperma. 



Nile liand. Somaliland : dry wooded places from Imi to Audo near the con- 

 fines of the Galla Arussi territory, Riva, 1049 ; near Imi. Riva, 1670. Uganda : 

 Eldama Ravine, 7000-7500 ft., Whyte ! 



Very near 1. chrysosperma, from which it is distinguished by the subclimbing 

 habit and larger spathulate bracts and sepals. Whyte's plant is referred to this 

 species, as if agrees very fairly with Hallier's description based on the Somaliland 

 plant which we hive not seen. It has fully opened flowers with corolla 2h in. long, 

 funnel-shaped with a broad purplish tube and a pale limb. 



147. I. Hartmanni, VatJce in Linncea, xliii. 514. Perennial. 

 Stems woody, densely clothed with deflexed tawny hairs. Leaves 

 entire, cordate-orbicular, 3-4 in. long and broad, obtuse, green and 

 obscurely pubescent above, matted with adpressed whitish hairs 



