Landolphia.] lxxxtv. apocynace^' (sTArr). 53 



22. L. humilis, K. Schum. inSchlechter, Westafr. Kautschuh-Efcped. 

 SOQ,Jig. 071 p. 288. A small undershrub, scantily branched or pro- 

 ducing only subherbaceous simple shoots, about ]h ft. high, with scanty 

 short tendrils ; young branches pubescent to tomentose, at length 

 glabrescent, dark brown or blackish when dry, old bark dotted with 

 numerous very minute lenticels. Leaves ovate-oblong or ovate-elliptic, 

 rarely oblong, shortly and obtusely acuminate, rounded at the base, 

 rarely obscurely cordate, 3-4J in. long, l-l|in. broad, thinly coriaceous, 

 glabrous above, softly pubescent beneath or finally glabrescent; midrib 

 channelled above, prominent below ; secondary nerves 0-7 on each side, 

 more or less curved, connected by strongly curved arches approaching 

 the margins within 1-2 lin., faintly raised like the loosely reticulating 

 veins ; petiole 1-3 lin. long. Panicles shortly peduncled, small, com- 

 pact, fulvo-tomentose, rarely elongate with distant spreading or re- 

 curved branches ; peduncle up to 1 in. long ; bracts broad-ovate, sub- 

 acute, the lower early deciduous ; pedicels hardly any. Calyx 1 J lin, long, 

 fulvo-tomentose ; sepals very broad, ovate, obtuse or subacute. Corolla- 

 tube cylindric, wide, widest between the middle and the mouth, 3-3J 

 lin. long, more or less tomentose without at least in the upper part, 

 villous within in the upper third ; lobes oblong, subacute, spreading or 

 reflexed, fleshy, 2-3 lin. long, finely pubescent on both sides. Stamens 

 inserted in the upper third of the tube; anthers oblong, subacute. 

 Ovary turbinate, top convex, finely tomentose. Style and stigma 2 lin. 

 long, the latter conical, shortly bifid. Fruit of the shape of an ordinary 

 plum, about IJ in. long, | in. in diam. (or of the size of an apple ac- 

 cording to Schlechter). 



Kower Guinea. Lower Congo : common in savannas and shrubberies near 

 Stanley Pool, Laurent! Schlechter, 15544. 



Soutb Central. Congo Free State : Lake Leopold, at Malapio, Laurent 

 (fruit only) ! 



Very closely allied to L. owariensis, from wliicli it differs only in tlie stunted 

 growth and the leaves being more rounded at the base and differently nerved. The 

 flowers are practically indistinguishable. Laurent and Schlechter state that it yields 

 no rubber. 



23. L. Heudelotii, A. DC. Prod. viii. 320. A shrub or climber 

 up to 30-45 ft. high, with branched tendrils (modified inflorescences) ; 

 young branches finely pubescent, soon glabrescent or more commonly 

 fulvo- or rufo-tomentose, at length dark or reddish-brown, dotted with 

 numerous small whitish lenticels. Leaves oblong to elliptic or sub- 

 lanceolate, obtusely subacuminate, or obtuse or subacute, obtuse or sub- 

 acute at the base, 1-3 in. long, f-l^^ in. broad, thinly coriaceous, pubes- 

 cent on both sides or only on the midrib, or tomentose below, usually 

 finally glabrescent and glossy above ; midrib scarcely sunk above, 

 prominent below; secondary nerves 7-10 on each side, oblique, slendei-, 

 connected by moderately curved fine arches some way witliin the 

 margin, slightly raised below ; veins reticulating, faint below, often 

 quite obscure above; petiole 1-2 lin. long. Corymbs shortly peduncled 

 or sessile, many-flowered, or panicles elongated with remote spieading 



VOL. IV. c 



