Fleiocai'pa.] lxxxiv. apocynace^ (staff). 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 loaves. Calyx ^ lin. long ; sepals ovate, acute or 

 subacute. Corolla white ; tube 2 lin. long ; lobes shortly ovate, obtuse, 

 I lin. long. Carpels 2, 2-ovuled. 



Upper Culnea. Gold Coast : at the base of the Aburi Hills, Johnson, 623 ! 



8. P. flavescens, Stapf. A shrub or small tree ; young branches 

 terete ; bark gi-eyish-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 J in. broad, 

 chartaceous or almost coriaceous, shining above, drying dark-brown ; 

 secondary nerxes 15-20 on each side, with almost indistinguishable 

 tertiary nerv-es 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 f lin. 

 long ; sepals broad-ovate, acute to subobtu?e. Corolla whitish to 

 sulphur-yellow: tube :> lin. long ; lobes short-ovate, obtuse, | Hn. long 

 Carpels 2, 2-ovuled. 



TTpper Guinea. Gold Coast : Acropong, Johnson, 803 ! Aburi Hills, Johnson, 

 616! 



Very near P. micrantha, but the leaves are narrower, not abruptly acuminate 

 and more coriaceous, and the flowers slightly larger. 



9. P. tubicina, Stapf in Kew Bulletin, 1898, :}04. A shrub; 

 branches greyish-brown ; bark breaking up longitudinally. Leaves 

 ternate, oblong, shortly and more or less obtusely acuminate, acute at 

 the base, 3|r-5j 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 f lin. long ; sepals 

 ovate or broad-oblong, obtuse. Corolla white; tube slender, 3-3^ lin. 

 long ; lobes oblong, obtuse, up to f lin. long. Carpels 2, 2-ovuled.— 

 Stapf ex Be Wild, k Durand. Contrib. Fl. Congo in Ann: Mus. Congo, 

 Bot. ser. 2, i. fasc. 1, 37; fasc. 2, 40. De Wild. & Durand, Reliq. 

 Dewevr. in Ann. Mus. Congo, Bot. ser. 3, fasc. ii. 150 Hunteria 

 pycnaniha, Hallier f. Kautschuklianen in Jahrb. Hamburg. Wissensch. 

 Anstalt. xvii. (1H99), 3. Beih. 191 partly, not of K. Schum. 



Soutb Central. Congo Free State : Basoko, Demeuse ; Katanga ; Lukof a, 

 Verdick, 594 ! Kasongo, Dewevre, 945 ! 



The IkwangovJas, according to Dewevre, use the leaves for pDisoning animals. 



