114 xcviii. ACANTHACE^ (clarke). [Cvosscindra. 



narrowly obovate, obtuse; base tapering; petiole 0. Spike 3 in. long, 

 sessile, very dense; bracts J in. long, subrhomboidal, spinous-ciliate on 

 the margins upwards, white hairy; bracteoles rather less than J in. 

 long, linear. Calyx-segments 5 ; posticons f in. long, lanceolate, 

 2-nerved, ending in 2 lanceolate hairy subspinescent points. Corolla 

 yellow; tube more than ^ in. long, linear, altogether of Crossandra, but 

 very slender. Anthers included in the corolla-tube, 1-celled; pollen 

 twice as long as broad. — Sclei'ochitcm stenostachyus, Lindau in Engl. 

 Jahrb. xx. 27, and in Engl, ct Prantl, Pflanzenfam. iv. 3 B. 81G, and in 

 Engl. Pfl. Ost-Afr. C. 309. 



Wile Ziand. British East Africa : Ukamba, Hildebrandt, 2720 ! 



The pollen as described by Lindau will not do for Sclerochiton. 



4. C. tridentata, Lindau i7i Engl. Ffl. Ost-Afr. C. 370. Glabrous; 

 innovations minutely pubescent. Stems 6 in. high. Leaves up to 

 6 by 1 J in., narrowly elliptic, tapering at both ends, tip obtuse ; petiole 

 ^ in. long or U. Spike peduncled, ovoid, 1 J in. long ; bract | in. long, 

 herbaceous, very sparsely hairy, ovate, tip lanceolate mucronate with 

 sometimes a small mucro on each side ; bracteoles ianceolate-linear, 

 longer than the calyx. Posticous calyx-segment nearly J in. long, 

 broadly ovate, 2-nerved, tip with 2 subglabrous mucronate teeth. 

 Corolla-tube § in. long. Anthers subglabrous; pollen oblong- ellipsoid, 

 3-ribbed- Style thinly hairy. — Lindau in Engl. Jahrb. xxiv. 320. 



nxozamb. X>ist. German East Africa: Kilimanjaro; above Useri, 6500 ft., 

 Volkens, 1994 ! 



5. C* "pun^enSy Lindau in Engl. Jahrb. XX. 'dG. Pubescent. Stem 

 6-12 in. high. Leaves up to 7 by 1 J in., narrowly elliptic, long-tapering 

 and coarsely undulate at the base. Spikes 2-6 by | in., extremely dense ; 

 bract I in. long, or rather more, broadly ovate, hairy, tip definitely 

 spinous, margin hairy and scarcely spinous; bracteoles hardly J the length 

 of the calyx, broadly lanceolate. Posticous calyx-segment i in. long, 

 broadly ovate, 2-nerved; its tip emarginate, hairy, hardly toothed. 

 Corolla-tube nearly 1 in. long ; lobes J in. long, appearing to have been 

 pale red. Anthers slightly hairy; pollen oblong, 3-ribbed. Style 

 glabrous.— Lindau in Engl. Pfl. Ost-Afr. C. 370. 



Wile Iiand. British East Africa: Ribe, near Mombasa, Wakefield! Nyika 

 country near Mombasa, Wakefield ! 



Mozamb. Dist. German East Alrica : Usambara ; Magila, Kirk! Tanga, 

 Heinsen, 136 ! Duga, 300 ft., Hoist, 3215 ! 



6. C. spinosa. Beck in Paulitschke, Ilarar, 4:b9,Jigs. 13, 14. White- 

 hairy. Stems 1-3 in. long. Leaves 1 by J in., oblong-elliptic, obtuse, 

 narrowed into a petiole -J in. long, densely and shortly hairy. Spikes 

 1 by I in., with many long white hairs ; bract | in. long, herbaceous, 

 ovate-lanceolate, hairy, spine-tipped, margin not toothed ; bracteoles 

 linear, longer than the calyx. Posticous calyx-segment J in. long, 

 elliptic, 2-nerved, tip of 2 spinous hairy teeth. Corolla yellow; tube 



