736 Lxxxvii. coNVOLVULACE^. [Ipomma 



(1789) ; non Vahl. G.piloms Roxb. Hort. Beng. p. 14 (1814), and 

 F. Ind., edit. Carey, ii. p. 55 (1824); non Eottl. C. dichrous 

 Eoem. & Schultes, Syst. Veg. iv. p. 263 (1819). /. dichroa 

 Hochst. in PI. Schimp. Abyss, ii. n. 820 {U.i. 1842), Choisy in 

 DC. Prodr. ix. p. 364 (1845); Hall, f., I.e., p. 136. 7. cvrachno- 

 sperma Welw. Apontam. p. 588, n. 57 (1859). 



LOANDA. — An annual climbing lactescent herb of 3 to 6 ft. ; leaves 

 bright green above, snow-white or hoary beneath, the middle lobe 

 constantly narrowed at the base; flowers funnel-shaped, rosy, moderate 

 in size ; peduncles axillary, 2- to many-flowered ; stamens inserted a 

 little above the base of the corolla-tube, included ; filaments com- 

 paratively elongated, flattened, a little dilated and purple-bearded at 

 the base ; anthers large, purple, oblong-obcordate, 2-celled ; the cells 

 distant, almost marginal ; pollen large, spherical, whitish ; ovary 

 conical, to the middle almost immersed in the cupuliform disk, 2-oelled; 

 the cells 2-ovulate ; style solitary, straight, as long as the filaments, 

 ending in the bilobed stigma ; the lobes globose, large, purple ; capsule 

 globose, unilocular, 4-valved, 4- or (in a single case) 5-seeded ; seeds 

 oblong, obtusely trigonous, sordid-brown, shaggy, scattered above 

 with thin cottony hairs, arachnoid. In dry hilly places by thickets 

 near Maianga do Povo, rather rare ; fl. and young fr. end of Feb. 1858. 

 No. 6343. An annual, climbing herb; leaves lobed, silvery-tomehtellous 

 beneath ; flowers moderate-sized, rosy ; seeds arachnoid. At Maianga 

 do Povo ; fr. June 1858. Coll. Carp. 764. In damp thickets near 

 Quiouxe ; fr. beginning of Aug. 1858. A more robust form, with the 

 leaf-lobes rather obtuse. No. 6244. 



18. I.purpureaRoth,Bot.Abh. p. 27(1787); Hall. f.,Z.c.,p.l37. 

 Convolvulus purpureus L. Sp. PI., edit. 2, p. 219 (1762). 



Pharbitis hispida Choisy in M6m. Soc. Phys. Geneve vi. p. 438 

 (1834) ; J. A. Schmidt, Beitr. Fl. Cap. Yerd. p. 233 (1852). 

 Cape Vekde Islands. — St. Jago ; seeds Jan. 1861. Coll. Carp. 788. 



19. I. Batatas Poir. Encycl. M^th. vi. p. 14 (1804); Hall, f., 

 Ic, p. 138; Ficalho, PI. Uteis, p. 226 (1884). 



Convolvulus Batatas L. Sp. PI., edit. 1, p. 154 (1753). Batatas 

 edulis Choisy in Mem. Soc. Phys. Genfeve, vi. p. 435 (1834); 

 Welw. Apontam. p. 551, under n. 98. 



IcoLO E Bengo. — Rather rarely cultivated at the banks of the 

 rivers Daude and Bengo ; very rarely flowering. At Prata, without fl., 

 Sept. 1857. No. 6220. 



Loan DA. — A very lactescent herb, root tuberous, whitish-rosy inside; 

 stems prostrate, almost creeping but not rooting, 3 to 8 ft. long, 

 loosely hirsute or shaggy, as well as the hirsute petioles angular, 

 mostly from green to purple ; leaves variable in shape, mostly hastate, 

 the basal lobes roundedly angled or bifid with the upper lobules 

 acuminate ; peduncles ascending, always longer than the petioles, 

 5- to 8-flowered, gradually thickened and angular towards the apex ; 

 corolla tubular-campanulate, but little revolute, whitish purple 

 outside, deep violet-purple inside except the moderately dilated limb ; 

 stigma capitate, whitish, more or less plainly bilobed. Cultivated in 

 arimos (plantations) of some colonists, near Loanda, etc., and only 

 very rarely sub-spontaneous ; at Imbondeiro dos Lobos ; fl. end of 

 July 1858. The leaves are also eaten by the negroes. No. 6219. 



GoLUNGO Alto.— Cultivated on the right bank of the stream 



