Merremia.| XC, CONVOLVULACEE (BAKER AND RENDLE). ttt 
Mozamb. Dist. British Central Africa: Ngamiland; Kwebe Hills, 3400 ft., 
Mrs. Lugard, 134! Northern Kalahari Desert, T’Klakane Pits, Lugard, 227! 
Also in the Kalahari region of South Africa, 
20. M. xanthophylla, Huallier f. in Engl. Jahrb. xviii. 113. 
Stems prostrate or climbing, herbaceous, subcompressed and angular, 
clothed, as is the whole plant, with short yellow-brown hairs. Leaves 
with shallowly cordate base, reaching about 2} in. long by 2 in. broad in 
the lower part, pinnately 5—9-lobed ; lobes acute or obtuse, the terminal 
above 1 in. long, the basal much the smallest, minutely hirsute on both 
faces ; nerves light-coloured and prominent beneath; petiole 6-9 lin. 
long. Peduncle 14~2 in. long; cymes few-flowered, dense ; bracts 
ovate-lanceolate to lanceolate, acute, 6 lin. long or less, subfoliaceous, 
hiding the base of the sepals. Pedicels 14~3 lin. long. Buds ovoid. 
Sepals coriaceous, elliptic, obtuse, glabrous, 4 lin. long. Corolla 
funnel-shaped, whitish, 8 lin. long, densely covered with yellow- 
brown hairs in bud.—/pomea xanthophylla, Hochst. in Schimp. PI. 
Abyss. No. 432. 
Nile Land. Abyssinia: Uschan, 5000-6000 ft., Schimper, 2099; and without 
precise locality, Schimper, 432! 
21. M, tridentata, Hallier f. in Engl. Jahrb. xviii. 116. Glab- 
rous ; stems slender, prostrate, Leaves numerous, small, very shortly 
stalked, hastate-oblong to subquadrate, 9 lin. or less in length, apex 
obtuse, emarginate and mucronulate to tridentate. Peduncles 1-flowered 
in African specimens, a little longer than the leaf, forming a slightly 
thickened pedicel above the minute ovate bracts. Sepals oblong, apex 
rounded, shortly cuspidate, 2-2} lin. long, the outer slightly the shorter. 
Corolla yellow, about 6 lin. long. Capsule not seen in African speci- 
mens, globose, glabrous, about 3 lin. in diam. Seeds dark, glabrous.— 
Hiern in Cat. Afr. Pl. Welw. i. 729. Zpomea tridentata, Roth in Rémer, 
Archiv. Botan. i. iii. 38; Choisy in DC. Prodr. ix. 353; C, B. Clarke 
in Hook. f. Fl. Brit. Ind. iv. 205. 
Lower Guinea. Angola: Pungo Andongo; sandy banks of the River 
Cuanza, near Condo, Welwitsch, 6190! 
Also in India. 
22. M. angustifolia, Hullier f. in Engl. Jahrb. xviii. 117 (incl. 
var. ambigua). Annual, glabrous. Stems prostrate, then twining, very 
slender. Leaves linear, obtuse, mucronate, 1-3 in. long, varying very much 
in breadth, generally from 1-2 lin., rarely broader, with small toothed 
hastate basal auricles. Peduncle very slender, 1-14 in. long., 1-3- 
flowered; pedicels thickened, subclavate, shorter than the peduncle ; 
bracts minute, lanceolate, acute or cuspidate, persistent. Flower-buds 
elliptic-ovoid. Sepals oblong to ovate-oblong, obtuse rarely subacute, 
cuspidate, glabrous, 2-24 lin. long, the two outer slightly shorter than 
the inner. Corolla pale yellow, funnel-shaped, 6-8 lin. long and broad. 
Capsule globose, glabrous, 3 lin. in diam. Seeds glabrous.— Wildem. & 
Durand in Bull. Herb. Boiss. 2 sér.i. 37; Hiern in Cat. Afr. PI. 
