Ipomea. | XC. CONVOLVYULACEA) (BAKER AND RENDLE). 181 
3—) 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. Prodr. ix. 385; Capua in Ann. Istit. Bot. 
Roma, viii. 225. 
Nile Land. Eritrea: Assaorta, Pappi, 2973. 
Mozamb Dist. German Hast Africa: without precise locality, Mannington ! 
The reference of an incomplete specimen to I. pentaphylla by Capua, l.c. is 
doubtful. 
105. I. prismatosyphon, Welw. Apont. Phyto-geogr. 585. An 
erect undershrub, 4—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 13 
in. broad, margin undulate, upper surface puberulous, lower covered 
with a dense light tawny tomentum, penninerved, bearing a gland on 
each side just above the petiole; petiole 6 lin. long. Flowers very 
fine, solitary, peduncle $—21 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 4 in. broad. Corolla whitish 
rosy, 0 in. long ; tube broad cylindrical, about 3 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, 44 lin. long, enveloped in a dense 
tuft of long shiny pale tawny hairs.—Britten in Journ. Bot. 1894, 34; 
Hiern in Cat. Afr. Pl. i. 741. 7. Buchneri, var. tomentosa, Hallier f. in 
Engl. Jahrb. xviii. 152. 
7a ehad Guinea. Angola: in the Presidium of Pungo Andongo, Welwitsch, 
2! 
Var. Buchneri (sphalm, Buchingeri), 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,—J. Buchneri, Peter in Engl. and Prantl, PlHlanzenfam, 
ae A., 29; Hallier f.in Engl, Jahrb. xviii. 151, and in Bull. Soc. Bot. Belg. xxxvii. 
Lower Guinea. Angola: Malange, Buchner, 135, Mechow, 439; Loanda, 
Matto de Mbango, Gossweiler, 1111! 
106. 5. magnifica, /allier f. in Engl. Jahrb. xviii. 152. Stem 
very similar to J. prismatosyphon, in habit and flower, grey-pubescent. 
Leaves distinctly and minutely petioled, 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.—J. Buchneri, var. latifolia, Hallier f. 
in Bull. Soc. Bot. Belg. xxxvii. 100. 
