728 LXXXVII. CONVOLVULACEA. [ Merremia 
Var. (?) chrysantha Hiern. 
A perennial herb, climbing far and widely; stem very thin, 
flexuous, broadly three-winged ; flowers large, of a sulphur or 
rarely of a whitish yellow colour, handsome ; fruit about } in. in 
diameter; seeds mostly with one curved face and two flat faces, 
minutely lepidote-puberulous, otherwise glabrous along the 
squamulose-puberulous angles, about 1 in. long by 2 in. thick. 
GoLuNGo ALTo.—At the base of the Alto Queta mountains; fr. 
Aug. 1855. Cou. Carp. 769. At Sange; fr. Aug. 1855. A plant 
with rather smaller fruits and more puberulous seeds, perhaps distinct. 
Cou. Carp. 768. 
2. M. umbellata Hall. f., Z.c., p. 114. 
Ipomea umbellata G. F. W. Meyer, Prim. Fl. Esseq. p. 99 (1818). 
Prince’s Istanp.—In the lower thickets ; fl. Sept. 1853. The pollen 
grains are globose and nodulose, not spiny. No. 6210. In fl. ; Sept. 
1853. In the study set a flower has a funnel-shaped corolla 2 in. long. 
A poor specimen, perhaps not belonging to this species. No. 6211. 
3. M. spongiosa Rendle in Journ. Bot. xxxii. p. 179 (1894). 
Ipomeea spongiosa Rendle, l.c.. IL. uliginosa Welw. ex Rendle, /.c. 
Punco AnponGco,—In fl. No. 6169) (= 6196)). Flowers whitish 
with a rosy tinge, plumose-hirsute. In swampy parts of Mutollo, in 
company with Scleria ; fl. Jan. 1857. A prostrate herb, with a vertical 
cylindrical root, and erect secund linear leaves narrower than in the 
type. No. 6169. Fr. Dec. 1856. Doubtfully referred here. CoLu. 
Carp. 774. 
4. M. quercifolia Hall.f. in Engl. Bot. Jahrb. xviii. p. 114 (1893). 
Punco ANDONGO.—Flowers large, orange-yellow, variegated, atro- 
purpureous at the bottom. In sandy thickets near Quitage, at the 
river Cuije ; fl. March 1857. No. 6172. 
5. M. multisecta Hall., f., d.c., p. 115. 
MossaMEepES.—A perennial, copiously lactescent herb, branched 
from the base ; stems several, prostrate, 2 to 3 ft. long, cylindrical, 
rigid, purplish ; leaves fleshy, very rigid and brittle, pedatifid-laciniate ; 
peduncles axillary, 1- or 2-flowered, three times as long as the petiole, 
bibracteolate ; capsule spherical, somewhat bisulcate, 2-celled, the 
cells 1- or very rarely 2-seeded, crowned with the filiform shortly 
bilobed style ; seeds large in proportion to the capsule, plano-convex, 
smooth. In sandy maritime stations between Mossamedes and Cabo 
Negro, not uncommon ; fr. beginning of July 1859, No. 6112. A 
lactescent, perennial herb ; roots sinuous, stems prostrate ; leaves like 
those of a Geranium or Pelargonium. At Praia da Amelia, near 
Mossamedes ; fr. July 859. Cou. Carp. 29. 
In company with this plant grew Zygophyllum simplex L. (Welw. 
herb. no. 1573) and Caucalis mossamedensis Welw. herb. no. 2500, in 
Sept. 1859 among gravelly hills towards the mouth of the river Caroca. 
Cuscuta planifolia Ten., var. mossamedensis (Welw. herb. no. 6141) 
grew upon this herb. In the study set a fasciated branch exists. The 
seeds are used as coffee. 
6. M. pentaphylla Hall. f., Z.c., p. 115. 
Ipomea egyptia lL. Sp. Pl. edit. 1, p. 162 (1753). Convolwulus 
pentaphyllus L. Sp. Pl., edit. 2, p. 223 (1762). 
