Cyphocarpa.'] cvi. amarantace^ (baker and clarke). 55 



Afr. C. 172 , Gilg in Engl. & Prantl, Pflanzenfam. Nachtr. 152; Lopr. 

 in Engl. Jahrb. xxvii. 42. 



Wrile Iiand. British East Africa : Taita, Hildebrandt, 2584 



7. C. orthac'anthay C. B. CI. An erect annual, hairy (not 

 tomentose). Leaves opposite ; blade \^ by J in., elliptic, triangular 

 at either end ; petiole J in. long. Inflorescence terminal, 2 by | in., 

 dense, straw-coloured, hairy ; partial inflorescences crowded, of several 

 fertile flowers ; hairs in the flower-clusters copious ; bracts of the rudi- 

 mentary flowers ending in rigid yellow spines standing out prominently, 

 not hooked. Filaments linear to the base ; staminodes very short, oblong, 

 emarginate. Ovary obovoid, glabrous ; style longer than the ovary ; 

 stigma small. — Pupalia orthacantha, Hochst. in Bot. Zeit. 1856, 598, 

 name only; Aschers. in Schweinf. Beitr. Fl. Aethiop. 181; Engl. 

 Hochgebirgsfl. Trop. Afr. 206. Cyathvia orthacantha, Schinz in Engl. 

 & Prantl, Pflanzenfam. iii. lA, 108, in Engl. Pfl. Ost-Afr. C. 173. 



M-lle I.and. Abyssinia ; JaJH, 4000-6000 ft., Schimper, 2153 ! 



13. CENTEMA, Hook. f. ; Benth. et Hook. f. Gen. PI. iii. 31. 



Perfect flower supported by 1-2 sterile flowers reduced to bracts or 

 bracteoles, which are muticous or spinous not uncinate in flower, and 

 in fruit are connate with the thickened base of the perfect flower ; 2-3 

 (rarely 1) perfect flowers under each floral leaf, constituting partial 

 inflorescences, which are arranged in compound spikes, and full of long 

 hairs. Stamens 5 ; filaments linear to the base, united into a short 

 cup, with an oblong process between each two ; anthers with 2 oblong 

 cells. Ovary ovoid, glabrous or pubescent, narrowed into a linear 

 style ; ovule one, suspended from a basal funicle. Seed orbicular, flat- 

 tened ; embryo annular. — Leaves opposite, narrowly oblong. 



Species 6, in Tropical and South Africa. 



It is difficult to draw a line between this genus and Cyphocarpa angustifolia, 

 Lopr., in which tlie perianth-segments are thickened at the base in fruit. The 

 4 following species, however, all have their leaves wider than the first section of 

 Cyphocarpa, and narrower than the second. 



Stem strongly tuberculur-scabrid on the ribs . . 3. C. hijlora. 



Stem smooth, or hiirdly minutely scabrid. 



Fruit-spike prickly ; ovai'y glabrous . . .1. C. angolensis. 



Fruit-spike hard, scnrcely prickly J ovary hairy 



Inflorescence straw-coloured . • . . 2. C. KirJcxi. 



Inflorescence red 4. C. rahra. 



1. C. angolensis, Hook. f. in Benth. et Hook. J. Gen. PI. iii. 31. 

 Stem erect, 2-3 ft. high, smooth or with obscure tubercles. Leaves 

 opposite; blade 2 by ^-l in., hairy, ultimately glabrescent. Inflor- 

 escence 2 J by \ in., straw-coloured, dense, in fruit harsh and prickly ; 

 peduncled (apparently) or with 2 floral leaves at its base {i.e. sessile). 

 Partial inflorescences usually with 2-3 fertile flowers ; sterile flowers 

 in fruit curved outwards, rigidly spinescent; hairs white, cells long, 



