730 Lxxxvii. CONVOLVULACE^. [Merremia 



Qaicuxe ; 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. 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-campannlate, 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. OPERCTJLINA Silva Manso, Enum. Subst. Braz.p. 16 (1836) ; 

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



Ipomoea Benth. & Hook. f. Gen. P]. ii. p. 870, partly. 



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

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



Ipomoea tuberosa L. Sp. PI., edit. 1, p. 160 (1753). /. kentro- 

 comIos C. B. 01. in Hook. f. El. Brit. Ind. iv. p. 213 (1883). 

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



Benguella (and Loanda). — 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-campannlate 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-ovuIate ; 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^ 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. Coll. Cakp. 766. 



Golungo 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. kentroeaulos Hall, f., I.e. 



Convolvulus kentroeaulos Stand, in PI. Sohimp. Abyss, ii. n. 800 

 (U. i. 1842), and ex Choisy in DO. Prodr. ix. p. 362 (1845). 

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



GoLUNQO 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- 



