Ipomoea.] xc. convolvulace.e (baker and rendle). 153 



44. I. chloroneura, Hallier f. in Engl. Jahrb. xviii. 132. 

 Annual. Main stem erect, a few inches high, branched from the base ; 

 branches widely spreading, prostrate or ascending, and again branched ; 

 branches and branehlets especially when young bearing, like the 

 petioles and peduncles, dense adpressed short white hairs and longer 

 spreading golden-yellow hairs. Leaves entire, oval, obtuse, 1-2^ in. 

 long, up to 13 lin. broad, generally narrower, when young bearing 

 <lense adpressed white hairs above, similarly but still more densely 

 hairy beneath, with a line of golden hairs on the veins and margin ; 

 older leaves less densely and conspicuously hairy; petiole 3-6 lin. long. 

 Peduncles 1-1 i in. long, increasing to 2 -J- in. or more in fruit. Flowers 

 few in a small dense head ; outer bracts foliaceous resembling the young 

 leaves in form and covering, but smaller, about 6 lin. long (including 

 the stalk), persisting and enlarging in fruit (to 1 in.). Sepals sub- 

 equal, elliptic-lanceolate, 3 lin. long, lower half with thinner glabrous 

 edges, thicker median portion prolonged above into an almost filiform 

 densely hairy tail. Corolla funnel-shaped, " whitish or very pale 

 yellow ; ' (Welwitsch), a little longer than the calyx; m id petaline areas 

 well-defined, bearing short white hairs, which also project from the tip 

 of the blunt corolla-lobe. Capsule globose, glabrous, 3 lin. in diam. 

 Seeds with a pale fawn-coloured silky pubescence. — Hiern in Cat. Afr. 

 PI. Welw. i. 734. 



lower Guinea. Angola : Pungo Andongo ; by the river Cuanza, near Lombe, 

 Welwitsch, 6181 ! Huilla; about Lopollo, Welwitsch, 6132 ! by the Kuito River, 

 between Kutue and Sobi, Baum, 755 ! 



Mozamb. Dist. British Central Africa : Ngamiland ; Botletle Valley, 

 Lugard, 190! 



45. I. argentaurata, Hallier f. in Engl. Jahrb. xviii. 132. In 

 habit and indumentum closely resembling /. chloroneura, but much 

 larger. Leaves shortly petioled, oblong with a subcordate base and 

 rounded mucronate apex, up to 2| in. long by f— 1^ in. broad, densely 

 strigose on the upper surface and deep green, silvery-silky below, veins 

 contrasting less with the intervening leaf-space, than in /. chloroneura. 

 Heads of flowers much larger than in /. chloroneura, densely strigose, 

 as is sometimes also the stem, with long golden-yellow hairs. Bracts 

 about 1 in. long, hairy like the calyx. Sepals linear-lanceolate or almost 

 linear, acuminate, about 6 lin. long, silky white on back with yellow 

 strigose margin. Corolla large, funnel-shaped, entire, whitish, 2 in. 

 long, nearly If in. wide ; miclpetaline areas adpressed, hirsute. Capsule 

 glabrous ; seeds covered with a dense dark brown pubescence. — /. 

 mnama, Benth. in Hook. Niger Fl. 466, not of Choisy. 



Upper Guinea. Togo : between Mis.iholie and Bismarckburg, Bilttner, 746. 

 Lagos : Ado, Rowland ! Northern Nigeria : Zungeru, Elliott, 16 ! Nupe, Barter, 

 1031 ! Quorra, Vogel, 123 ! 



Closely allied to I. chloroneura, but differing in its much larger flowers and 

 flower-heads, leaves with subcordate base, &c. 



