264 Lxxiir. cowPOSiTit (oliver and hiern). [Gutenhergia. 



amplexicaul, the lower ones uarrowing to a sessile base. Capitula 

 ^ in. diam., on slender pedicels ranging up to f in., in a diffuse corym- 

 bose cyme. Invnhicral scales lanceolate acutely acuminate, thinly 

 cottony ; the outer ones narrower and shorter. Achenes 8-10-ribbed. 

 BKozamb. Distr. At Tette, Peters/ 



3. G-. nig-ritana, 0. ^ H. Erect branching herb of probably 

 2-3 ft. ; branches crisped-puberulous or thinly hirsute above, striate. 

 Leaves oval-oblong, acute or broadly pointed, more or less obtuse at 

 base, subsessile or very shortly petiolate, remotely denticulate, sparsely 

 hairy often scabrid at length glabrate above, pubescent or subtomen- 

 tose beneath, varying up to 3-4 in. long. . Capitula oo-flowered purple 

 nearly ^ in. diam. on peduncles varying to 2 in. the central often sub- 

 sessile, in irregular ascending dichotomous paniculate cymes ; involu- 

 cral scales ascending subappressed, outer and median lanceolate very 

 acute rigid, inner nearly equalling the florets more broadly pointed or 

 obtuse, glabrate or cottony. Achenes colamnar equally or subequally 

 and strongly 1 0-costate. — Oiospermumnigritanum, Benth. Fl. Nigrit. 425. 



Vpper Guinea. Niger-land, Th. Vogel! Barter! A.\>hQQkQX.Q,, Irving ' 

 Var. scahra. Leaves scabrid, hirsute-tomeritose beneath, heads cottony, Yomba, 

 Niger, Barter! 



4. G-. 7 macrocephala, 0. ^ H. Erect herb of probably 

 2-4 ft., with terete striate thinly pubescent ascending branches. 

 Leaves alternate ovate- or lanceolate-oblong acute subentire rugulose- 

 scabrous above, reticulate and pubescent beneath, varying to 4-5 in. 

 long by 1 in. or more broad ; petioles (of upper leaves) very short. 

 Capitula niany-flowered hemispherical, |-1 in. diam. singly terminat- 

 ing numerous long erect striate pubescent peduncles, forming a lax 

 cymose panicle ; scales of involucre multi- seriate scarious loosely ap- 

 pressed denticulate nearly glabrous ; outer obovate broadly rounded and 

 mucronate above, inner linear spathulate and sharply acuminate above. 

 Receptacle naked. Achenes columnar terete slightly curved strongly 

 1 0-costate glabrous, callus-based. 



Vpper Guinea. Abbeokuta, Irving / 



5. G. polycephala, 0. Sf H. in Journ. Linrt. Soc. Lond. iv. 

 95 (1876). Erect branching more or less hoary-tomentose herb; 

 stem terete striate thinly tomentose. Upper leaves sessile, lanceolate or 

 ovate-lanceolate, 1-2 in. long, from an obtuse or cordate-amplexicaul 

 base, entire or subentire, glabrescent or scaberulous above, whitish- 

 tomentoee beneath. Capitula small in diffuse cymose panicles, on 

 slender peduncles varying to ^-| in. Involucral scales appressed, 

 pauciseriate, outer shorter linear-lanceolate, inner oval-oblong 

 3-nerved, acute or at length weathered and obtuse. Achenes obovoid, 

 longitudinally and subequally 10-12-costate, glabrous or with thinly 

 scattered short hairs. 



South Central. "With specimens from region of Lake Tanganyika, Cameron / 

 nxozamb. Distr. Kihva and Monfia, Dr. Kirk! 



6. &. longripes, Sfcdz in Peters Mossamh. Bot. 349. Tall erect 



