108 Lxxxiv. APOCYNACE/E (stapf). [Strophauthus, 



rarely obtuse. Stamens inserted at the upper end of the cylindric 

 portion of the corolla- tube ; anthers conniving in a cone and projecting 

 into the widened part of the tube, lanceolate, acuminate or sometimes 

 produced into a long bristle, sagittate ; wings long, firm, obtusely 

 edged ; tails short ; foot of connective with a central tuft of closely 

 packed hairs in the upper part and a more or less hairy longitudinal 

 crest below it ; filaments distinct but short, filiform, passing into a 

 prominent, more or less hairy ridge decurrent on the corolla-tube. 

 Disc 0. Carpels 2, free ; style filiform ; stigma capitate, 5-grooved, 

 with a membranous reflexed frill at the base, and a minutely bifid 

 apiculus ; ovules numerous, pluriseriate. Mericarps follicular, oblong 

 or spindle-shaped, divaricate. Seeds spindle-shaped, slightly com- 

 pressed, with an apical plumose awn and a deciduous basal coma ; endo- 

 sperm scanty, fleshy : cotyledons oblong, plano-convex ; radicle short. — 

 Shrubs, often scandent, glabrous or more or less hairy, with persistent 

 or deciduous foliage. Leaves opposite, rarely ternate ; axillary stipules 

 U ; axillary glands subulate or conical, 2-0, rarely more, at the base of 

 each petiole. Inflorescences terminal, often on the ends of short 

 branches, corymbose, many- or few-flowered or reduced to solitary 

 flowers ; flowers mostly showy. 



Species about 40 in tropical and South Africa and troi)icHl Asia. 

 All elaborate bibliograpbical index of the papers bearing on Strophanthus may 

 be found in Payrau, Strophanthus, (1900), 165-173. 



*RouPELLiA. — Sepals scarious ; corolla-lobes obtuse or acute, never tailed ; anther- 

 tips produced into a fine awn, about 5 lin. long; seeds glabi-ous. 



Sepals and corolla -lobes obtuse . . . . 1. S. gratiis. 



Se])als and coroUa-lobes acute 2. S. ThoUoni. 



**EusTROPHANTHUS. — Sepals herbaceous ; corolla-lobes produced into long narrow 

 tails, rarely not caudate {^S. Courmonti and iS". ecandatus) ; anther-ti])s acute, 

 inucronate or produced into a short awn, up to 3 ^- lin. long ; seeds more or less 

 hairy. 



fCylindric infi-a-staininal part of the corolla-tube about as long as the cami)anulate 

 or cupular supra-staminal part or longer. 



Leaves more or less hispid or tomentose, rarely pubes- 

 cent. 

 Leatless when in fiower. 



Leaves acuminate ; flowers in terminal cymes, 

 distinctly ])edi celled. 

 Branches and leaves softly pubescent . . ^. S. Ledienii. 



Branches and leaves densely tomentose . . 4. /S'. holosericeus. 



Leaves obtuse, tomentose ; flowers in clusters or 

 solitary on very short branchlets, very shortly 

 pedi celled or sessile. 

 Bracts and sei)als broad, ovate; corolla-tube 



over 1 in. long o, S. Emini. 



Bracts and sepals linear; corolla-tube 5 lin. 



long . . . . . . . Q. S. Nicholsoni. 



Leaves produced with the flowers. 



Very hispid; corolla-tails 4-7 times longer than 

 the tube; anthers included. 

 Sepals conspicuously shorter than the corolla- 

 tube . . . . . . . 1. S. Komhe, 



