174 XC. CONVOLVULACE (BAKER AND RENDLE). [ /pomea. 
90. I, arenicola, Rendle d: Britten in Journ. Bot. 1894, 176. A 
glabrous perennial herb with a tuberous root. Stems decumbent, fleshy, 
purple, 4-10 in. Jong, Leaves deep green, 14~34 in. long ; lower lanceo- 
late or elliptic, usually acute; upper larger, elliptic, subacute to acute; 
petiole about the length of the blade. Flowers on a many (—10) flowered 
spreading cyme springing from the base of the shoot, sometimes solitary 
or few together in axillary cymes; peduncles shorter than the leaves, 1} 
in. long or less; pedicels short; bracts small, triangular-subulate. 
Sepals narrowly ovate, acuminate, tip more or less convolute, 6 lin. 
long, the two outer smaller and shorter. Corolla apparently campanu- 
late-funnel-shaped about 2 in. long, “ whitish-violet, purple inside” 
(Welwitsch). Capsule globose, glabrous, 1 lin. in diam. Seeds shortly 
tomentose.—Hiern in Cat. Pl. Welw. i. 740. 
Lower Guinea. Angola: Pungo Andongo; sandy woods near Cazella, Wel- 
witsch, 6180! 
91. I. simplex, var. obtusisepala, endle. Stem woody, appar- 
ently trailing, 6 in. long, reaching nearly 1 lin. in diam. at the base, 
glabrous. Leaves sessile, linear, narrowing towards the base, reaching 
2} in. long and 14 lin. broad, glabrous, apex weakly cuspidate. Flowers 
solitary, axillary on very short peduncles. Sepals glabrous, ovate, sub- 
obtuse to shortly acute, 4 lin. long. Corolla rose-purple 2, funnel- 
shaped, 14 in. long. 
Mozamb. Dist. Rhodesia: Salisbury, Rand, 272. 
Described from a single shoot which I had formerly (Journ. Bot. 1901, 56) 
referred to the species, from which it differs in the shorter and almost obtuse 
sepals. 
The species is widely distributed in South Africa. 
92. I. Welwitschii, Vathe ex Hallier f. in Engl. Jahrb. xviii. 146. 
Near /. simplex, but much taller. Stems stiff, straight, woody, 9 in- 
14 ft. long, simple or shortly branched, terete, glabrous or minutely 
hirsute. Leaves linear to linear-lanceolate, shortly acute, tapering to 2 
very short petiole, rigid, glabrous, 13-5 in. long, 14 to barely 3 lin. broad. 
Peduncles many, axillary, usually short, 1-3-flowered; bracts small, 
lanceolate. Sepals lanceolate, acuminate, glabrous, 5-7 lin. long: 
Corolla funnel-shaped, glabrous, white-rosy (Welwitsch), 2-24 in. long; 
12 in. broad.—Britten in Journ. Bot. 1894, 85; Rendle in Journ. Bot. 
1901, 57; Hiern in Cat. Afr. Pl. Welw. i. 739. J. Hystrix, Hallier f. 
in Engl. Jahrb. xviii. 146, and in Bull. Herb. Boiss. vii. 53. 
Lower Guinea. Angola: Malange, Mechow, 224; Huilla; bushy pastures 
between Nene and Mumpata and near Lopollo, Welwitsch, 6120! German South- 
west Africa: Damaraland, Hépfner, 39. 
Mozamb. Dist. Lake Tanganyika, Cameron! German East Africa: Gonda 
(Igonda), Boehm, 56. British Central Africa: Nyasaland; Namitawa Mounta, 
MeClounie, 85! Mianji, Scott-Elliot, 8639! Shire Highlands, Buchanan, 134! 
North Nyasa, Whyte ! 
Var. latifolia, Britten in Journ. Bot. 1894, 85; Hiern in Cat. Afr. Pl. Welw. i. 
739. Leaves linear-oblong to lanceolate or oblanceolate, cuspidate or shortly 
