Psiloirichum.] cvi. amarantacile (baker and clarke). 59 



5. P. Schimperi, Engl. Hochgehirgsjl. Trop. Afr. 207. Glabrous, 

 except the flowers, 18 in. high, repeatedly branched. Leaves 2 by J in., 

 linear-oblong, obtuse, subsessile. Spikes at the end of the branches 1-2 

 in. long, linear, lengthening in fruit to 5 in., green ; small quasi-axillary 

 spikes also added. Perianth-segments broadly elliptic, 3-nerved, minutely 

 hairy. Stamens of the genus. Ovary obovoid ; style shorter than the 

 ovary; stigma small, capitate. — Schinz in Engl. & Prantl, Pflanzenfam. 

 iii. lA, 111. 



Xrile ]«and. Abyssinia: Begemeder ; region of the River Reb, Schimper, 

 1388 



6. P. gracilentuxn, C. B. CI. Glabrous, except the axis of the 

 spikes. Branches 1-2 ft. long, remotely dividing. Leaves opposite, 

 2 J by yV in. Spikes simple, terminal on long peduncles, 1 J in, long 

 when young (3 in. long in fruit) ; axis very hairy. Perianth of the 

 genus, J in. long, nearly glabrous. Ovary of the genus ; style rather 

 longer than the ovary; stigma small, capitate. — Centenui gracilenta, 

 Hiern in Cat. Afr. PI. Welw. i. 890. 



Itower Guinea. Angola; Huilla, 3800-5500 ft., Welwitsch, 6511 ! 



Xlf ozaznb. Blst. Portuguese East Africa : Mendvve, Johnson, 315 ! British 

 Central Africa : Nyasaland ; Fort Young, Nicholson ! 



The flowers are solitary, and Hiern states that there are no staminodes ; so that 

 the genus is not Centema. 



7. P. confertum, C. B. CI. Glabrate ; branches long, with few 

 distant leaves. Leaves opposite, If by y^ in. Peduncle long, terminal ; 

 compound spike pale brown, cylindric, IJ by J in., very dense. Perianth 

 in fruit J in. long; segments ellipsoid-oblong, striate, acute. Seed 1, 

 half-ellipsoid, hard, brown. — Achyranthes conferta, Schinz in Bull. Herb. 

 Boiss. iv. 420. 



Mozamb. 3>ist. German East Africa ; Muansa, on Lake Victoria, Stuhlmann, 

 4502 ! Tabora, Stuhlmann^ 606 ! 



This appears very near P. gracilentum, but has the spike much denser. Schinz 

 by some :iccident, says the leaves are alternate, but nevertheless puts the plant in 

 Achyranthes. 



8-9 are imperfectly known species of Psilotrichum proper. 



8. P. Ruspolii, Lopr. in Ann. Istit. Bot. Kama, ix. 19. A glabrous 

 herb ; branches 8 in. long. Leaves opposite, 1 by J in. ; lower attenu- 

 ated into a petiole, upper sessile, often subcordate. Heads on terminal 

 peduncles, |- by \ in., dense ; partial inflorescences of 1 or 2 flowers. 

 Ovary ovoid ; style cylindric ; stigma bifid. — " Resembles P. africanum, 

 Oliver." — Lopr. in Engl. Jahrb. xxvii, 59, in Malpighia, xiv. 452. 



Xrile Ziand. Somaliland : between Bela and Daua Rivers, Riva, 1467. 



9. P. Robecchiiy Lopr. in Ann. Istit. Bot. Roma, ix. 19. A 

 glabrous much-branched herb, a foot high. Leaves all alternate, 1-2 in. 

 long, ovate, attenuate on the petiole. Spikes terminal on long peduncles, 



