134 xcviii. ACANTHACE^ (clarke). [Asystu^a. 



9. A. macrophylla, Lindau in Engl. c(- Prantl, Pfianzenfam. iv. 

 3 B. 32G. Shrub up to 10 ft. high. Leaves up to 14 by 4| in. 

 (commonly | this size), elongate-obovate, acuminate, when mature 

 glabrous shining; petiole 0-1 i in. long. Panicle 4-8 in. long, linear, 

 minutely rusty hairy, lower small cymes \ in. long, distant; bract 

 \ in. long, linear. Sepals \ in. long, linear, minutely rusty. Corolla 

 purple to white; tube \\ in. long, dilated in the upper half. Anthers 

 2-celled ; cells parallel, each with 2 tails at the base ; pollen small, 

 short-ellipsoid, more trigonous than in the preceding species. Ovary 

 glabrous ; ovules 2 in each cell. — Dicentranthera niacrophylla, T. Anders, 

 in Journ. Linn. Soc. vii. 52 ; Hook. f. Bot. Mag. t. 5690. 



Vpper Guinea. Cameroons : Batanga, Bates, ]40! Bipindi, Zenker, 825! 

 Johann Albrechts-Hohe, Standi, 470 ! Victoria, Frenss, 1146 ! 1179 ! 1365 ! Yaunde, 

 Zenker, 427 ! 655 ! Zenker Sf Staudt, 200a ! 639 ! Uiver Cameroon, Mann, 2197 ! 

 Fernando Po, Mann, 13 ! 



JaO-weT Guineas Gaboon : Munda ; Sibange Farm, Soyaux, 291 ! Biittner, 

 351 : 358 ! Gaboon River, Mann ! 



Ovules 4-6 in ovary {T. Anderson), 4 in each cell {J. D. Hooker). I find 2 in 

 each cell, aa Bentham and Lindau state. 



10. A. africana, C. B. Clarke. Herb, 2-3 ft. high. Leaves up 

 to 3| by IJ in., narrowed at either end, mature pubescent on the 

 midrib beneath, otherwise glabrous ; petiole \-l in. long. Inflorescence 

 terminal, lax ; spikes 1| in. long, panicled, not unilateral ; bracts hardly 

 j\ in. long, linear. Calyx -^^ in. long ; lobes 5, lanceolate, minutely 

 pubescent. Corolla nearly § in. long ; tube J in. long. Anthers 

 oblong, parallel, obscurely mucronate at the base ; pollen of the 

 genus. Ovary glabrous ; 2 ovules in each cell ; style-branches short, 

 oblong, subconnate. Capsule 1 in. long, 4-seeded ; stalk ^ in. long, 

 solid; seeds tubercular-scabrous, without hairs. — Isochoriste africana^ 

 S. Moore in Journ. Bot. xviii. 1880, 309 ; Lindau in Engl. & Prantl, 

 Pfianzenfam. iv. 3 B. 326. 



Ziower Guinea. Angola : Pungo Andongo, Welwitsch, 5073 ! 5078 ! 5079 ! 



11. A. Welwitschii, ^S'. Moore in Jmirn. Bot. 1880, 308. Herb, 

 2-4 ft. high. Stem quadrangular, microscopically pubescent, and 

 with cystoliths. Leaves 2| by f-1 in., suddenly narrowed at the 

 base, scabrid hairy above, more hairy beneath with parallel raised 

 primary nerves. Petiole hardly any. Spikes terminal and peduncled 

 axillary, 2J-7 by \-\ in., 10-60-flowered, sometimes branched, forming 

 a terminal compound spike, shortly hairy; bracts \ in. long, ovate, 

 acute. Sepals \-\ in. long, linear-lanceolate. Corolla rose-white 

 {S. Moore) ; tube f in. long. Anthers shortly tailed. Capsule 1| in. 

 long, 4-seeded, very minutely pubescent. — Lindau in Engl. & Prantl, 

 Pfianzenfam. iv. 3 B. 320. 



liODirer Guinea. Angola: Pungo Andongo and Huilla, TFe?«;iY*cA, 5039, 5105, 

 5188! Pungo Andongo, Mechow, 46! Malange, Buchner, 123! Pogge, 302! Huilla, 

 Antunes, 177 ! Netvton ! 



12. A. Charmian, ;S'. Moore in Journ. Bot. 1880, 38. Hairy. 

 Stem quadrangular. Leaves up to 3J by J in., narrow-elongate- 



