72 XC. CONVOLVULACE® (BAKER AND RENDLE). [(Cladostigma. 
numerous, slender (1-14 lin. thick), elongated, finally leafless and 
spinescent at the tip, ultimate branchlets shortened, tuberculiform. 
Leaves scattered on the elongated branches, fascicled on the dwarf 
shoots (24-9 lin. long, about 2 lin. broad), very variable in form, 
narrowly oblong, oblong-lanceolate or obovate, obtuse or emarginate, 
base acute, tapering into the very short petiole, adpressed hairy on both 
surfaces. Flowers smali, solitary, generally fascicled with the leaves on 
the dwarf shoots; pedicels slender, about equal to the flowers, :earing 
a pair of minute linear bracts near the base. Sepals subequal, thinly 
membranous, silvery-silky on the back, in the male about | lin. long, 
ovate and subobtuse, in the female obovate-spathulate, nearly equal to 
the corolla, 3 lin. long and nearly as broad; in the fruit rather rigid, 
spreading, longitudinally 5-nerved and transversely veined. Corolla 
campanulate, funnel-shaped, 34 lin. long; lower part of tube sub- 
globose, upper campanulate ; lobes equal in length to the tube, elliptic- 
ovate, back silky, edges glabrous. Stamens shorter than the corolla, 
glabrous ; filaments filiform, subulate, dilated gradually towards the 
base; anthers oblong, absent in the female. Disc in male flower 
thick, 5-lobed ; sterile pistil cone-shaped, long-haired ; styles as long as 
the stamens, each ending in a deeply cordate 5-lobed stigma. Disc in 
female flower small, 5-lobed; ovary subglobose ; styles filiform, twice as 
long as the ovary; stigmas large, exserted, forked, branches irregularly 
pinnately lobed. Capsule shortly ovoid, 4-valved, 4-seeded.—Engl. 
Jahrb, xxxiv. 154, fig. 1. C. dioiewm, Schinz in Bull. Herb. Boiss. i. 
414, not of Radlk. 
Nile Land. Somaliland: Abdallah, Keller, 43; Boran, Tarro Gumbi, Ellen- 
beck, 2076; Djaro, Ellenbeck, 2061; Buuder Gumbi, Ellenbeck, 2079, and at 
Marta on the Ganane, Ellenbeck, 2032. Gallaland: Rufa Plateau, Ellenbeck, 
1069 ; between Ennia-Galla and Arussi-Galla, 1156, and on the Atshabo Plateau, 
Ellenbeck, 1105. 
7. GRESSA, Linn.; Benth. et Hook. f. Gen. Pl. ii. 881. 
Sepals coriaceous, obovate, subequal, imbricate. Corolla-tube 
campanulate ; lobes ovate, imbricate in bud, spreading. Stamens and 
styles exserted ; filaments filiform, glabrous; anthers oblong. Dis¢ 
inconspicuous. Ovary 2-celled, 4-ovuled; styles distinct from the 
base ; stigmas capitate. Capsule 2—4-valved, usually 1-seeded. Seed 
glabrous, shining ; cotyledons linear, plicate-—A much-branched, low- 
growing, suffrutescent perennial. Leaves small, entire, sessile. Flowers 
small, aggregated at the tip of the branchlets in bracteate spikes. 
One or a few closely allied species. 
1. C. cretica, Linn. Sp. Pl. ed. 1, 223. Stems slender, terete, 
woody, a few inches to a foot long, with numerous spreading oF 
ascending, hairy, densely-leaved branchlets. Leaves ovate to lanceo- 
late, acute, sessile, 4} in. long. Flowers aggregated in dense spikes 
at the end of the branchlets, each bracteated by a reduced leaf. Calyx 
hairy, 1} lin. long. Sepals concave, obovate, subacute. Corolla about 
