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 fields near Quicuxe; 

 fr. June 1858. Coll. Cakp. 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. Sukst. Braz.p. 16 (1836) ; 

 Hall. f. in Engl. Bot. Jahrb. xvi. p. 582 (1893). 



Ipomcea Benth. & Hook. f. Gen. PI. ii. p. 870, partly. 



1. 0. tuberosa Meissn. in Mart. El. Bras. vii. p. 212 (1869); 

 Hall, f., ^.c.xviii. p. 119 (1893). 



Ipomcea tuberosa L. Sp. PI., edit. 1, p. 160 (1753). /. hentro- 

 caulos C. B. CI. in Hook. f. Fl. Brit. Ind. iv. p. 213 (1883). 

 /. Mendesii Welw. Apontam. p. 584, n. 12 (1859). 



Benguella (and Loaxda). — 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 1 J in. long, con- 

 cealing the capsule. In thickets in Benguella, whence it was introduced 

 into Loanda gardens in 185(3 by Dr. Mendes Alfonso ; fl. and fr. in his 

 garden May 1858. No. 6254. At Loanda; fr. July 1858. Coll. Carp. 766. 



GoLUXCio 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. Coll. Carp. 132. 



2. 0. kentrocaulos Hall, f., I.e. 



Convolvulus hentrocaulos Steud. in PI. Sohimp. Abyss, ii. n, 800 

 {U. i. 1842), and ex Clioisy in DC. Prodr. ix. p. 362 (1845). 

 Ipomcea tuberosa A. Rich. Fl. Abyss, ii. p. 67 (1851); non L. 



Golungo Alto. — 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- 



