114 Lxxxiv. APOCYNACE^ (stapf). [Rauwolfia. 



10. R. Preussiiy K. Schuin. in Engl, d' Prantl, Pflanzenfam. 

 iv. ii. 154. fig. 50, S. Branches terete, slender olive-brown, dotted 

 with whitish lenticels. Leaves ternate, obovate-oblong, suddenly con- 

 tracted into a linear acumen (up to lin. long and 1-H lin. broad), 

 cuneate at the base, very variable in size, up to 7 in. long and 2J in. 

 broad, thinly membranous ; secondary nerves about 6-10 on each side ; 

 veins quite obscure ; petiole 4-6 lin. long. Flowers in paired subscorpioid 

 or raceme-like cymes, much contracted when young, resembling a small 

 corymb ; peduncle J-1 J in. long ; pedicels up to 2 lin. long. Calyx | lin. 

 long ; segments lanceolate-linear, obtuse. Corolla-tube about 2 lin. long ; 

 lobes rounded, | lin. long. Fruit an obliquely obovoid simple or obcor- 

 date twin drupe, acute, 4 lin. long. — Schlechter, Westafr. Kautschuk- 

 Exped. 307. 



Upper Guinea. Cameroons : Barombi, Preuss, 65 ! 342 ! Lolodorf, Staudt, 384 ! 

 Mundame, 660 ft., Schlechter, 12929. 



11. R. rosea, K. Schum. in PJngl. Pfl. Ost-Afr. C 317. A gla- 

 brous shrub, about ft. high ; branches divaricate, terete, slender. 

 Leaves ternate, obovate-oblong to oblong, acuminate (acumen acute, J in, 

 long), acute to cuneate at the base, 4-6 in. long, lf-2;^ in. broad, 

 thinly membranous, dark green above, pale beneath ; secondary nerves 

 0-12 on each side, oblique, curved ; veins obscure ; petiole 4-6 lin. long 

 Cymes solitary or 2-4 on a common peduncle, few-flowered, racemiform ; 

 peduncle very slender, J-J in. long. Calyx not quite 1 lin. long ; segments 

 ovate, subacute. Corolla rose-coloured ; tube 2 J lin. long, villous at the 

 mouth ; lobes orbicular- ovate, | lin. long. Fruit an oblique, oblong- 

 ovoid, simple, or an obcordate twin drupe, each drupe 4 lin. long. 



IVIozaxnb. Bist. German East Africa : Usanibara ; Lutindi, in forests, Holst^ 

 3250 ! Nguelo, Heinsen ! 



12. R. Cuxnminsii, Stapf. A glabrous shrub; young branches 

 quadrangular, slender. Leaves in whorls of 3-4, oblanceolate, acumi- 

 nate, long attenuate at the base, 4-6 in. long, 1-1 J in. broad, dull pale 

 green, membranous ; secondary nerves about 1 2 on each side, oblique, 

 curved ; petiole 1-3 lin. long. Cymes 3-1-flowered, lax, arranged in 

 4-2-rayed umbels ; peduncle about f in. long, slender ; rays about 3 lin. 

 long, very slender; pedicels Ij lin. long. Calyx J lin. long; segments 

 ovate, acute. Corolla unknown in the normal state. Fruit a simple 

 or twin drupe, with the two halves quite free and divaricate; drupes 

 semi-elliptic, 5 lin. long, much compressed from the sides, red, outer 

 edge almost straight. 



TTpper Guinea. Asbanti : Assin Yan Kumasi, Cummins, 216 I 



The corollas of the specimen are, below the middle, deformed by a gall insect. 



They are about -i| lin. long of which nearly 2^ lin. go to the gall, which consists of 



an almost solid thick ellipsoid body. 



13. R. mombasiana, Stapf in Kew Bulletin, 1894, 21. A shrub, 

 up to 6 ft. high, perfectly glabrous ; youngest branches quadrangular. 



