Ipomoea.] xc. convolvulace.e (baker and eendle). 181 



3-5 lin. long, unequal, ovate, obtuse, the outer shorter, and toothed at the 

 base. Corolla funnel-shaped, white, glabrous outside, 4 in. long, limb 

 nearly as broad ; lowest third of the tube subcylindrical. Fruit and 

 seeds not seen. — ? /. pentaphylla, Cav. Ic. and Descript. iii. 29, t. 256, not 

 of Jacq. ; Choisy in DC. Proclr. ix. 385; Capua in Ann. Istit. Bot. 

 Roma, viii, 225. 



N ile Land. Eritrea : Assaorta, Pappi, 2973. 



IVXozamb Dist. German E;ist Africa : without precise locality, Hannington ! 



The reference of an incomplete specimen to I. pentaphylla by Capua, I.e. is 

 doubtful. 



105. I. prismatosyphon, Weho. Apont. Phyto-geogr. 585. An 

 erect undershrub, -1-6 ft. high, containing a milky juice. Stems many, 

 stout, woody, cinereo-pubescent, densely leaved. Leaves oblong, base 

 and apex rounded, the latter shortly apiculate, up to 3 in. long by 1 J 

 in. broad, margin undulate, upper surface puberulous, lower covered 

 with a dense light tawny tomentum, penninerveel, bearing a gland on 

 each side just above the petiole; petiole 6 lin. long. Flowers very 

 tine, solitary, peduncle |-2^ in. long, pubescent like the stem, bearing 

 a pair of large broadly obovate foliaceous bracts (about 1 in. long), 

 exceeding the short pedicel (^ in.) and calyx, but soon falling. Sepals 

 elliptic, very blunt, densely covered on the back with the light tawny 

 tomentum, barely 1 in. long by about h in. broad. Corolla whitish 

 rosy, 5 in. long; tube broad cylindrical, about § in. in diam., expand- 

 ing above into a funnel-shaped lobed limb, about 3 in. in diam. ; mid- 

 petaline areas limited by a hairy nerve in the young flower, sub- 

 sequently glabrous. Capsule woody, pubescent; valves 4, elliptic, a 

 little over 1 in. long ; seeds brown, 4-3? lin. long, enveloped in a dense 

 tuft of long shiny pale tawny hairs. — Britten in Journ. Bot. 1894, 84; 

 Hiein in Cat. Afr. PI. i. 741. /. Buchneri, var. tomentosa, Hallier f. in 

 Engl. Jahrb. xviii. 152. 



lower Guinea. Angola : in the Presidium of Pungo Andongo, Welicitsch, 

 6182! 



Var. Buchneri (sphalin. Buchiuyeri), Britten in Journ. Bot. 1894, 85. Whole 

 plant glabrous except on the lateral nerves on the under surface of the leaf, which 

 are described as canescent. — I. Buchneri, Peter in Engl, and Prantl, PHanzenf'am. 

 iv. 3 A., 29 ; Hallier f . in Engl. Jahrb. xviii. 151, and in Bull. Soc. Bot. Belg. xxxvii. 

 100. 



Lower Guinea. Angola: Malange, Buchner, 135, Mechow, 439 ; Loanda, 

 ^latto de Mbango, Gosstveiler, 1111 ! 



106. I. magnifica, Hallier f. in Engl. Jahrb. xviii. 152. Stem 

 very similar to J. pn-ismatosyphon, in habit and flower, grey-pubescent. 

 Leaves distinctly and minutely petiolecl, ovate-suborbicular, nearly 5 in. 

 long, over 3 in. broad, base subacute, apex shortly acuminate, undulate 

 on the margin, glabrous above, grey-pubescent beneath. Flowers 

 solitary, axillary; bracts and sepals grey -pubescent on the outside, 

 white-tomentose on the edge. Corolla 5 in. long ; limb nearly as 

 broad ; tube above 6 lin. in diam. — /. Buchneri, var. latifolia, Hallier f . 

 in Bull. Soc. Bot. Belg. xxxvii. 100. 



