118 xc. coNVOLvuLACEiE (baker and kendle). \ Calonyction. 



Lower Guinea. Island of St. Thomas, Moller. Gaboon, Soyaux, -377. 

 Angola : G-olungo Alto, Welwitsch, 614-7 ! 



South Central. Congo Free State : Luebo River, Descamps. 

 A widespread tropical species. 



2. C. muricatum, G. Bon, Gen. Syst. iv. 264. Perennial. Stems 

 wide-climbing, papillose. Leaves distinctly petioled, cordate-ovate, 

 acuminate, ultimately mucronulate, membranous, t glabrous, 4-5 in. 

 long and as broad. Peduncle long; flowers 3-6, in a lax dichasial or 

 monochasial cyme; bracts minute; pedicels l-l^ in. long, much 

 thickened in the fruiting stage. Sepals ovate, acuminate, tapering to a 

 long fleshy point which is shorter in the two inner, keeled, glabrous, 

 about 6 lin. long. Corolla reel or lilac, about 3 in. long ; tube about 

 2-2J in. long, passing gradually into the funnel-shaped limb ; expanded 

 limb about 2 in. in diam. Capsule globose, up to 1 in. in diam. Seeds 

 4, smooth, brown, 5 lin. long. — Hallier f. in Engl. Jahrb. xviii. 154 and 

 in Bull. Herb. Boiss. v. 1044 ; Hiern in Cat. Afr. PI. Welw. i. 742. 

 C. speciosum, var. muricatum, Choisy in DC. Prodr. ix. 345. Ipomoea 

 muricata, Jacq. Hort. Schcenbr. iii. 40, t. 323. /. shirensis, Baker in 

 Kew Bulletin, 1894, 74, not of Oliv. /. Kirkii, Britten in Journ. Bot. 

 1894, 85. Convolvulus muricatus, Linn. Mant. 44. 



Upper Guinea. Gambia, Ingram ! Sierra Leone : Mahela, Scott-Elliot, 

 4074 ! Lagos, Dawodu, 257 ! 



Nile Land. Bongo, Schiveinfurth, 2501 ! Cultivated at Khartoum, Sclwein- 

 furth, 288 ! 



Lower Guinea. Angola : Pungo Andongo, Welwitsch, 6146 ! 



Mozamb. Dist. German East Africa: Rovuma Bay, Kirk! British 

 Central Africa: Nyasaland; Upper Shire Valley, Kirk! Shire Highlands 

 Buchanan, 391 ! 



Also in the Cape Verde and Mascarene Islands, Tropical Asia and Tropical 

 America. 



24. ASTROCHLJENA, Hallier f. in Engl. Jahrb. xviii. 120. 



Sepals elliptic to lanceolate or ovate, generally more or less acute, 

 subequal or the inner shorter and narrower. Corolla funnel-shaped, 

 lilac-purple or violet, or white with a purple eye. Stigmas oblong. 

 Capsule 4-valved. Seeds 4, hairy.- — Herbs growing erect from a stout 

 persistent rootstock, sometimes shrubby ; stems sometimes trailing ; 

 the whole plant, or the younger portions covered with stellate hairs. 



Species 19. Endemic; chiefly East African. 

 Flowers solitary or in 2- to several-flowered cymes, often 

 umbellate or corymbose, not crowded in heads. 

 Corolla less than 1 in. long. 



Peduncle 1- to several-flowered; leaves ovate or 



elliptic ; corolla 9 lin. long . . . . \. A. lachnosperma. 



Peduncle many-flowered ; leaves rhomboid ; corolla 



7 lin. Ion? 2. A. solanacea. 



