Landolphia. | LXXXIV. APOCYNACEA (STAPF). 35 
3. L. Buchananii, Stapf. <A climbing shrub, perfectly glabrous 
in all its parts; young branches slender, dark reddish-brown, dotted 
and often rough with numerous lenticels, Leaves oblong or subovate- 
oblong, obscurely (rarely distinctly) and obtusely acuminate or obtuse, 
rounded at the base, 2-4 in. long, 4-14 in. broad, chartaceous, glossy 
above; midrib slender, channelled above, slightly raised below ; secon- 
dary nerves extremely slender, 11-16 on each side, rather spreading, 
straight, connected rather close to the margins by flat equally fine 
arches ; network of veins delicate, very inconspicuous, faintly impressed 
above; petiole 21 lin. long. Corymbs small, few-flowered, dense, 
glabrous, very shortly peduncled or subsessile, much shorter than the 
leaves ; bracts small, ovate, obtuse; pedicels up to 1 lin. long. Calyx 
slightly over 1 lin. long, quite glabrous, dark brown, with pale thin 
margins when dry; sepals ovate, broad, obtuse. Corolla dark-reddish 
when dry, quite glabrous; tube subcylindric, somewhat stout, slightly 
widened from the middle upwards, 24-3} lin. long; lobes oblong, obtuse, 
43-54 lin. long, rather straight. Stamens inserted at the middle of the 
corolla-tube. Ovary depressed ovoid, sulcate, glabrous; style and 
stigma about 1 lin. long; stigma shortly cylindric from a thickened 
base, bifid. Fruit globose, 14-1}? in. in diam.; rind thin, leathery, 
without a sclerenchymatous layer ; seeds oblong, in a fibrous juicy pulp, 
up to 7 lin. long; albumen horny, coarsely pitted ; cotyledons very thin, 
foliaceous.—Clitandra Buchanani, Hallier f. Kautschuklianen in Jahrb. 
Hamburg. Wissensch. Anstalt. xiv. (1899), 3. Beih. 118. 
Mozamb. Dist. British Central Africa: Nyasaland; Shire Highlands, 
Buchanan! Mount Mlanji, Brown! Masuka Plateau, in forests, 6500-7000 ft., 
Whyte! and without precise locality, Buchanan (coll. 1891 without number)! and 
220 and 286 partly ! 
This is said to yield india-rubber. A barren specimen collected by Buchanan 
(138), at 5000 ft., near Blantyre, may be a slightly hairy form of this species. The 
leaves are exactly like those of LZ. Buchananii, but the petioles of some of them, as 
well as some of the very young branches and tendrils, are more or less covered with 
short, stiff, fine hairs. Buchanan describes it also as an india-rubber plant. ‘The 
tendrils are very slender, long and branch-hooked. 
4. L. Cameronis, Stapf. A climbing shrub with long slender 
hook-branched tendrils from the branch-forks, quite glabrous; young 
branches brown or reddish-brown, dotted and often rough with numerous 
lenticels. Leaves oblong, subovate-oblong or oblong-lanceolate, obscurely 
and obtusely acuminate or subobtuse, rounded (rarely subacute) at the 
base, 2-3 in. long, 4-1} in. broad, chartaceous or thinly coriaceous, 
faintly glossy above; midrib slender, channelled above, slightly raised 
below ; secondary nerves extremely slender, 10-15 on each side, rather 
spreading, straight, connected close to the margin by flat equally fine 
‘arches; network of veins delicate, very inconspicuous, faintly impressed 
above; petiole 14 lin. long. Corymbs small, 4—8-flowered, moderately 
dense, glabrous, shortly peduncled, much shorter than the uppermost 
leaves; bracts small, oblong or ovate, or the uppermost rotundate, 
obtuse; pedicels up to 1} lin. long. Calyx slightly over 1 lin. long, 
