730 LXXXVII. CONVOLVULACE&. [Merremia 
Quicuxe ; fr. March 1854. No. 6149. A prostrate apparently 
perennial herb; stems purple ; leaves almost like those of an ivy ; 
flowers sessile ; calyx fringed ; corolla yellow. In fieldsnear Quicuxe; 
fr. June 1858. Cox. Carp. 784. A perennial herb ; root very long, 
becoming woody in old age ; stems prostrate, frequently rooting at the 
nodes ; sepals at length rosy-red, the inner ones broadly obcordate, 
ciliate-fimbriate ; corolla tubular-campanulate, deep yellow almost 
orange-coloured ; the tube reddish outside, red-striate inside ; style 
solitary, elongated, ending in two closely connate capitate stigmas (or . 
in one bicapitate stigma); capsule at length rosy-red. In flooded places 
near Imbondeiro dos Lobos ; fl, and fr. 8 June 1858. No. 6150. 
The pollen is spherical and not spinose. 
9. OPERCULINA Silva Manso, Enum. Subst. Braz. p. 16 (1836) ; 
Hall. f. in Engl. Bot. Jahrb, xvi. p. 582 (1893). 
Ipomea Benth, & Hook. f. Gen. Pl. ii. p. 870, partly. 
1, 0. tuberosa Meissn. in Mart. Fl. Bras. vii. p. 212 (1869); 
Hall. f., .c., xviii. p. 119 (1893). 
Ipomea tuberosa L. Sp. Pl. edit. 1, p. 160 (1753). I. kentro- 
caulos C. B. Cl. in Hook. f. Fl. Brit. Ind. iv. p. 213 (1883), 
I, Mendesii Welw. Apontam. p. 584, n. 12 (1859). 
BeENGUELLA (and Loanpa).—A shrubby twining herb or strong 
shrub, extensively climbing to a great height, flowering twice in each 
year ; sap milky ; branches cylindrical, smooth, leaves deep green, not 
glossy, the nervation of their lobes impressed above, in relief beneath ; 
flowers tubular-campanulate or funnel-shaped, golden-yellow, paler 
outside ; sepals variable in shape, occasionally somewhat acuminate, 
generally obtuse, sometimes even sub-emarginate; corolla-tube 
pentagonal about the middle gradually ending in the 5-plicate 10- 
crenate limb ; 3 of the stamens much taller than the other 2; ovary 
2-celled, the cells 2-ovulate ; stigma bicapitellate, golden in colour ; 
capsule 2-celled, as large as a large walnut or as a moderate-sized 
hazel-nut or as a pigeon’s egg, ellipsoidal-globose, blunt at the apex, by 
abortion usually 2-seeded ; seeds large, quite black, quasi-velvety with 
thin closely adpressed very black hairs, ovoid, triangular on the outer 
ventricose face, flat on the other faces, obliquely truncate at the base ; 
the angles densely clothed with spreading not adpressed black hairs ; 
the septum of the ripe capsule usually very thin or partly obsolete, so 
that the capsule seems unilocular ; fruiting sepals 14 in. long, con- 
cealing the capsule. In thickets in Benguella, whence it was introduced 
into Loanda gardens in 1856 by Dr. Mendes Alfonso ; fl. and fr. in his 
garden May 1858. No. 6254. At Loanda; fr. July 1858. Coy. Carp. 766. 
GoLuNnGco ALTo.—A shrub, climbing high and widely ; leaves and 
flowers handsome. At the outskirts of the primitive forest in Sobato 
de Mussengue ; seeds from a plant cultivated at Loanda, Oct. 1858 
and June 1860. Cou. Carp. 132. 
2. O. kentrocaulos Hall. f., dc. : 
Convolvulus kentrocaulos Steud. in Pl. Schimp. Abyss. ii. n, 800 
(U. 7. 1842), and ex Choisy in DC. Prodr. ix. p. 362 (1845). 
Ipomea tuberosa A. Rich. Fl. Abyss. ii, p. 67 (1851); non L. 
GoLunGo ALtTo.—A_ herb, apparently perennial, climbing very 
extensively and to a great height over thickets and upon trees, 
ornamenting the borders of the forests with its numberless sulphur- 
