Landolphia.]| LXXXIV. APOCYNACE (STAPF). 53 
22. L. humilis, X. Schum. in Schlechter, Westafr. Kautschuk-Eaped. 
306, fig. on p. 288. A small undershrub, scantily branched or pro- 
ducing only subherbaceous simple shoots, about 1} ft. high, with scanty 
short tendrils; young branches pubescent to tomentose, at length 
glabrescent, dark brown or blackish when dry, oid 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, 3-43 in. long, 1—1? in. broad, thinly coriaceous, 
glabrous above, softly pubescent beneath or finally glabrescent ; midrib 
channelled above, prominent below ; secondary nerves 6-7 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 | in. long; bracts broad-ovate, sub- 
acute, the lower early deciduous ; pedicels hardly any. Calyx 14 lin. long, 
fulvo-tomentose ; sepals very broad, ovate, obtuse or subacute. Corolla- 
tube cylindric, wide, widest between the middle and the mouth, 3-3} 
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 1} in. long, 3 in. in diam. (or of the size of an apple ac- 
cording to Schlechter). 
Lower Guinea. Lower Congo: common in savannas and shrubberies near 
Stanley Pool, Laurent ! Schlechter, 12544. 
South Central. Congo Free State: Lake Leopold, at Malapié, Laurent 
(fruit only) ! 
Very closely allied to ZL. owariensis, from which it differs only in the 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, 4. 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, 3-1} 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, slender, 
connected by moderately curved fine arches some way within the 
margin, slightly raised below; veins reticulating, faint below, often 
quite obscure above ; petiole 1-2 lin. long. Corymbs shortly peduncle 
or sessile, many-flowered, or panicles elongated with remote spreading 
