Pletocarpa. | LXXXIV. APOCYNACEE (STAPF). 101 
above, alternating with very similar tertiary nerves, which are (like the 
delicate veins) inconspicuous below and slightly raised above ; petiole 
4—5 lin. long. Flowers sessile in compact axillary clusters, often from 
the axils of fallen leaves. Calyx 4 lin. long; sepals ovate, acute or 
subacute. Corolla white ; tube 2 lin. long; lobes shortly ovate, obtuse, 
? lin. long. Carpels 2, 2-ovuled. 
Upper Guinea. Gold Coast: at the base of the Aburi Hills, Johnson, 623! 
8. P. flavescens, Stapf. A shrub or small tree; young branches 
terete ; bark greyish-brown, breaking up longitudinally. Leaves oppo- 
site, rarely ternate, oblong to oblong-lanceolate, shortly and gradually 
acuminate or subobtuse, acute at the base, 3—5 in. long, 1-1} in. broad, 
chartaceous or almost coriaceous, shining above, drying dark-brown ; 
Secondary nerves 15-20 on each side, with almost indistinguishable 
tertiary nerves between them, both of which (as well as the veins) are 
very faintly raised above and rather obscure below; petiole 4—6 lin. 
long. Flowers sessile, in compact sessile or very shortly peduncled 
axillary clusters, often from the axils of fallen leaves. Calyx } lin. 
long; sepals broad-ovate, acute to subobtuse. Corolla whitish to 
sulphur-yellow; tube 3 lin. long ; lobes short-ovate, obtuse, ? lin. long. 
Carpels 2, 2-ovuled. 
deb aad Guinea. Gold Coast: Acropong, Johnson, 803! Aburi Hills, Johnson, 
Very near P, micrantha, but the leaves are narrower, not abruptly acuminate 
and more coriaceous, and the flowers slightly larger. 
J. P. tubicina, Stapf in Kew Bulletin, 1898, 304. A shrub; 
branches greyish-brown ; bark breaking up longitudinally. Leaves 
ternate, oblong, shortly and more or less obtusely acuminate, acute at 
the base, 34-54 in. long, 1 to nearly 2 in. broad, coriaceous, glossy 
above ; secondary nerves 12-20 on each side, very faint below, more 
distinct above, alternating with and often indistinguishable from the 
tertiary nerves; veins quite obscure below, slightly raised above ; 
petiole 6-8 lin. long. Flowers sessile, 12—20 in compact axillary clusters, 
often from the axils of former leaves. Calyx ? lin. long; sepals 
ovate or broad-oblong, obtuse. Corolla white; tube slender, 3-3} lin. 
long ; lobes oblong, obtuse, up to } lin. long. Carpels 2, 2-ovuled.— 
Stapf ex De Wild. & Durand. Contrib. Fl. Congo in Ann. Mus. Congo, 
Bot. sér. 2, i. fase. 1, 37; fase. 2, 40. De Wild. & Durand, Reliq. 
ewevr. in Ann. Mus. Congo, Bot. sér. 3, fase. ii, 150, Hunterta 
Pycnantha, Hallier f. Kautschuklianen in Jahrb. Hamburg. Wissensch. 
Anstalt. xvii. (1899), 3. Beih. 191 partly, not of K. Schum. 
_ South Central. Congo Free State: Basoko, Demeuse ; Katanga ; Lukofu, 
Verdick, 594! Kasongo, Dewevre, 945! 
i x . = ; 2 
The Ikwangoulas, according to Dewévre, use the leaves for poisoning animals. 
