Merremia | LXXXVII. CONVOLVULACE. 729 
MossaMEpDES.—An annual, twining herb, with campanulate-funnel- 
shaped, whitish, comparatively large flowers. In sandy thickets at the 
river Giratl, rather rare; fl. July 1859. No. 6118. 
7. M. tridentata Hall. f., /.c., p. 116. 
Convolvulus tridentatus L. Sp. PL, edit. 1, p. 157 (1753). 
Ipomea tridentata Roth in Romer, Archiv. Bot. i. 3, p. 38 (1798) ; 
Chois. in DC. Prodr. ix. p. 353 (1845). 
Punco AnponGco.—At the sandy banks of the river Cuanza, near 
Condo; fl. 13 March 1857. No. 6190. 
The pollen is without spines. 
8. M. angustifolia Hall. f., Z.c., p. 117. 
Ipomea angustifolia Jacq. Collect. Bot. ii. p. 367 (1788). Z. 
filicaulis E. Mey. in Flora 1843, Beil. p. 159, under n. 34 ; non Bl. 
Var. £. ambigua Hall. f., dc. 
Convolvulus filicaulis Vahl, Symb. Bot. ii. p. 24 (1794). Zpomaa 
Jjilicaulis Chois. in DC. Prodr. ix. p. 353 (1845), partly ; non BI. 
LoanpA.—A_ prostrate herb; root long, woody, perennial; the 
numerous stems and the branches very slender, elongate-virgate, 
3 to 8 ft. long, procumbent ; leaves narrowly linear, 14 in. long, sub- 
sessile, hastate-auriculate at the base on both sides ; auricles acutely 
bifid, flowers 4 to # in. long, funnel-shaped, pale yellow. In fields and 
dry uncultivated places throughout the district, plentiful, occurring 
during the whole year and usually in flower; fl. andfr. No. 6246. In 
fields at Morro das Lagostas ; fl.and fr. No. 6247. Perennial ; stem 
prostrate ; runners very long, decumbent; leaves linear-lanceolate, 
hastate ; flowers small, sulphur-coloured; fr, March 1854. Cou. 
Carp. 762. 
AmpBaca.—In bushy hilly places on the left bank of the river 
Caringa, fr. June 1855; also in flat sterile places about Ngombe, 
fr. Oct. 1856. A riparian plant. No. 6203. 
HuiLtia.—Fl. and fr. Apparently this species, No. 6122. 
This plant, although very tender, is of great economic use, and 
furnishes very agreeable fodder for sheep and such-like animals ; 
during the dry and barren winter season, from June to September, 
many domestic animals are fed almost exclusively upon it. 
The pollen is without spines. 
9. M. convolvulacea Dennst. Schliiss. Hort. Malab. p. 34 (1818). 
Evolvulus hederaceus Burm. f. Fl. Ind. p. 77, t. 30, fig. 2 (1768). 
M. hederacea Hall. f., Lc., p. 118. 
Hvritia.—In rocky places at Sambos Morro; fl.-bud Dec. 1859. 
Doubtfully referred to the above species. No. 6110. 
10. M. emarginata Hall. f., Z.c., p. 118. 
Evolvulus emarginatus Burm. f. Fl. Ind. p. 77, t. 30, f. 1 (1768). 
E. Glechoma Welw. Apontam. p. 589, n. 64 (1859). Cf. Palkia 
angolensis Welw. in Bol. Conselho Ultramar. Lisboa, no. 7, p. 81, 
n. 29 (August 1854). 
Loanpa.—A perennial, prostrate herb, with the habit of Falkia ; 
branches sarmentose, rooting; calyx 5-sepalous; the three inner 
segments oblong-obcordate, with a long ciliate fringe at the apex ; 
corolla tubular-campanulate, yellow; capsule 2-celled, the cells 
l-seeded. In wooded places nearly dried up after flooding, near 
