Landolphia. | LXXXIV, APOCYNACE# (STAPF). 55 
Anstalt. iii. (1886) p. Ixxvi., ix. 1 (1891) 226; Kulturg. Deutsch. 
Kolon. 274. V. senegambensis, var. Traunii, Sadeb. in Jahrb. Ham- 
burg. Wissensch. Anstalt. iii. (1886) lxxvii. 
Upper Guinea. Senegambia: Gombo, Heudelot. Mboro, Leprieur! sandy 
diy soil near Albreda, and very common in the Cape Verd Peninsula and by the 
Gambia and Casamanze Rivers, Perrottet, 491! in the neighbourhood of the Casa- 
manze and Nunez Rivers, Heudelot, 602! 606! Cape Verd Isles: San Jago, 
Bocandé. Senegal, Michelin ! Portuguese Guinea: Bissio, Zraun. French Guinea: 
Paroisse, 14, 20, 21, 22, 27. Futa Jallon: Timbo, Miquel; Kisosso, Maclaud, 
242; Bramaya, Paroisse, 20, 214; at Bayabaya, near the River Scarcies, Scott- 
Elliot, 4544! 4773! and near Wallia, Scott-Elliot, 4630! 
Var. 8 Djenge, Stapf in Jown. Linn. Soc. xxx. 87. Fruit globose or depressed- 
globose, not stipitate. 
Upper Guinea. Sierra Leone: Scarcies River, near Kukune, Scott-Elliot, 
4650! 4675! Falaba, Scott-Elliot, 5450! 
Hallier f. also enumerates the following specimens under L. Heudelotii: Togo : 
Little Popo, Traun ; Bismarckburg, Biitiner, 325; Misahdhe, Baumann, 517; 524. 
Cameroons: Yaunde, Zenker, 662. Lower Congo: Stanley Pool, Laurent. Of 
these I have only seen Zenker’s 662, without flowers or fruits. It is certainly not 
L. Heudelotii, but probably ZL. owariensis. The same may be the case with the 
Togo specimens, of which Hallier himself says that they much resemble Z. owariensis. 
They were referred to L. Heudelotii on account of the length of the corolla-lobes, 
which are on the whole slightly longer in L. Heudelotii than in L, owariensis ; bu 
this is no reliable character. The two species differ chiefly in the shape of tly 
sepals and corolla-tube, and in the insertion of the stamens. ZL. Heudelotii wa: 
originally described from almost glabrous specimens; such seem, however, to rarel; 
occur, the tomentose form being the common one, — Th's species is, among 
Apocynacee, undoubtedly one of the most valuable sources of rubber in West Africa 
Hua and Chevalier, l.c., give an elaborate description of the area inhabited by it in 
French Guinea, It extends from Senegambia far into the basin of the Upper Niger 
and to the head waters of the Volta, being one of the characteristic features of the 
vegetation on the dry laterite plateaux of the interior. 
24. L. Kirkii, Dyer in Kew Report, 1880, 39,42. A scandent 
shrub, with long branched tendrils (modified inflorescences); young 
branches fulvo-pubescent or finely tomentose, at length glabrescent, 
reddish-brown with small whitish lenticels. Leaves very variable in size 
and shape on the same branch, lanceolate to oblong, rarely more or less 
ovate or elliptic, usually gradually tapering into a short obtuse acumen, 
shortly acute or obtuse at the base, 1—4 in. long, 10-16 lin. broad, 
thinly coriaceous, very loosely pubescent on both sides (except the mid- 
rib which is generally densely pubescent to villous below), finally more 
or less glabrescent, chiefly above, glossy above; midrib shallowly 
channelled above, prominent below; secondary nerves 10-12 on each 
side, very slender, slightly oblique, like the delicate network of the 
veins slightly raised on both sides; marginal arches obscure; petiole 
slender, 2-3 lin. long. Corymbs dense, subsessile, many-flowered, or 
panicles somewhat loose, ovoid or much elongated, with spreading 
branches often passing into tendrils, fulvo-pubescent or finely tomen- 
tose all over; bracts minute, ovate; pedicels very short. Calyx 
scarcely 1 lin. long.; sepals ovate, acute or subacute, membranous 
