Blephciris.] xcviii. acanthace.e (clarke). 101 



17. B. Buchneri, Lindau in Engl. Jahrh. xx. 30. Hairy or 



ultimately glabrate, except the inflorescence. Stem-leaves in distant 

 whorls of 4, whereof the 'I inner are 2-5 by ^- J- in., linear or oblong, 

 entire or with very few obscure teeth, 2 outer reduced, ^-1 in. long, 

 ovate, lobed, with spines ^-\ in. long. Inflorescence 1-1 ^ in. in diam. ; 

 flower-bract j in. long, spathulate-oblong, acute, more or less spinous 

 towards the top ; bracteoles 0. Calyx -j in. long, 2 inmost segments 

 linear-lanceolate, nearly as long as the others. Corolla 1 in. long, 

 blue. — Lindau in Engl, tk Prantl, Pflanzenfam. iv. 3 B. 318. B. acan- 

 thodioides, S. Moore in Journ. Bot. 1880, 22{) partly, not of Klotzsch. 



liOiver Guinea. Angola : Pungo Andongo, Welwitsch, 5061 ! 5080 ! 5096 ! 

 5112! 5174! 5219! Mechow, 109! Malange, Buchner, 92! Caringa River, W'el- 

 ivitsch, 5163 ! Cambo River, Mechow, 547a ! 



South Central. Lunda : Lomani River, Pogge, 1217 ! 



IVZozamb. 301st. British Central Africa : Nyasaland ; Tanganyika Plateau, at 

 Fort Hill, JVhyte ! 



18. B. chrysotricha, Lindau in Engl. Jahrh. xx. 32. Branches and 

 innovations w4iite-hairy. Leaves in whorls of two very unequal pairs 

 {Lindau), larger leaves 3 by If in., broad-elliptic, triangular at either 

 end, mature scabrous, nearly glabrous, margin sparingly dentate ; petiole 

 if in. long. Spikes 1|- by 1 in., on very short lateral branchlets, few- 

 flowered, strobilate. Flower-bracts | by f in., obovate, obtuse, strongly 

 3-nerved, nearly glabrous, with very long teeth. Posticous sepal 

 1-1 J in. long, elliptic-oblong, nearly glabrous. Hairs of the anthers 

 golden-brown. — Lindau in Engl, k Prantl, Pflanzenfam. iv. 3 B. 318, 

 and in Engl. Pfl. Ost-Afr. C. 370. 



XVXozamb. Bist. German East Africa : Usagara, StuJdmann, 199 ! 

 The large leaf is detached, and the statement that the four leaves are in very 

 unequal pairs cannot be verified. 



19. B. tetrasticha, Lindau in Engl. Jahrh. xx. 29. Branch 

 IG in. long, undivided, terete, pubescent. Leaves (exactly decussate) in 

 equidistant alternate pairs, 1 in. long, ovate, acuminate, spinous- 

 margined, sessile. Flowers forming a loose quasi-terminal spike 

 2 by 1 in. ; flower-bracts 1 by J in., ovate, acuminate, long-spinous on 

 the margin; bracteoles f-1 in. long, linear, softly hairy. Posticous 

 calyx-segment 1 in. long, minutely hairy. Corolla \\ in. long. — Lindau 

 in lEngl. & Prantl, Pflanzenfam. iv. 3 B. 318. 



Ziower Guinea. Angola : Malange, Buchner, 6 ! Kuango River, Mec/iotc, 

 563! 



obmitrata, C. B. Clarke. Hairy or later glabrate. Leaves 

 t whorls of 4, subsimilar, 1^—2 by J- J in., oblong or elliptic, 



20. B, 



in apparent 



subsessile, margin regularly spinous-toothed. Inflorescences 1-3J by 1 

 in., strobilate, flower-bract 1-1^ in. long, ovate-lanceolate, acuminate, 

 rigid, spinous; bracteoles |-1 in. long, linear. Posticous calyx- 

 segment J in. long ; 2 inmost calyx-segments J in. long. Corolla 1 in. 



