108 LXXXIV. APOCYNACE® (STAPF). { Diplorhynchus. 
within ; tube constricted near the base, obovoid above, 1 lin. long ; lobes 
slightly longer. : 
Mozamb, Dist. German East Africa: Ugalla; Kabombue, Bohm, 29a! 
Portuguese East Africa: Lower Zambesi; opposite Sena, Kirk / 
12. RAUWOLFIA, Linn.; Benth. et Hook. f. Gen. Pl. ii. 697. 
Calyx small, eglandular within, more or less herbaceous , sepals », 
almost free and imbricate or anited into a flat 5-toothed cup. Corolla 
salver-shaped ; tube slightly widened below the mouth, very rarely just 
below the middle (2. Volkensiz) ; mouth constricted, without appendages, 
usually villous; lobes 5, twisted and overlapping to the left. Stamens 
in the widened part of the tube; filaments short; anthers free from 
the stigma, ovate, usually rather obtuse, shortly and obtusely 2-lobed 
at the base; anther-cells polliniferous and dehiscing to the base. Disc 
annular or cup-shaped, entire or slightly lobed. Carpels 2, free or 
more or less coherent; style filiform or columnar; stigma capitate, 
shortly cylindric, minutely papillose and slightly viscous, with a_ basal 
deflected rim or membrane and a usually very short slightly bilobed 
apiculus rising from a shallow depression; ovules 2 in each cell, 
collateral. Mericarps 2 (or often 1 by abortion), free or more or less 
united, drupaceous; pyrenes crustaceous, 1—-2-seeded, more or less com- 
pressed. Seeds ovoid; endosperm fleshy; cotyledons flat; radicle straight 
‘ov _recurved.—Mostly glabrous trees or shrubs. Leaves opposite or 
verticillate, those of a whorl often very unequal; axillary stipules 0; 
axillary glands numerous, in a dense fringe or in clusters, frequently 
secreting resin. Inflorescences terminal or pseudo-axillary, peduncled, 
few- or many-flowered, often repeatedly 2—3-chotomous, compound, 
umbelliform or corymbose, rarely racemiform ; flowers small. 
Species about 50 in the tropics of both hemispheres and in eastern South Africa. 
*Corolla-tube 13-3} lin, long ; mouth densely villous; lobes 3-4 the length of the 
tube; stamens near the mouth. 
tYoung branches stout; leaf whorls crowded; leaves firmly membranous or char- 
taceous, acute or acuminate, not caudate; flowers sessile or shortly pedicelled, 
dense cymes on the ends of the secondary or tertiary rays of usually large umbels; 
fruit a globose or obcordate-globose twin drupe, or more usually (by abortion) @ 
simple often asymmetric drupe, rather fleshy, slightly compressed. 
Young branches distinctly 4-winged . : : . 1. BR. macrophylla. 
Young branches terete or subangular, not winged. 
Leaves narrow-lanceolate (3-14 in. broad), long and 
gradually acuminate at both ends; petioles 
2-1} in. long, very slender : : 
Leaves lanceolate to lanceolate-elliptic* (14-4 in, 
broad), acute or shortly acuminate, 
Blade not or obscurely decurrent at the acute , 
base ; petiole 3—1 in. long : : . 8. BR. Welwitschir. 
Blade more or less decurrent ; petiole usually 
very short. 
Blade about 5 times as longas broad. . 4 R. nataiensis. 
Blade about 2—4 times as long as broad. 
2. R. caffra. 
