312 LXXiTi. coMPOSiTiE (OLIVER AND hiern). IGouyza. 



obtuse or acute, often toothed at tip. Achenes 



shining 14. C. tigrensis. 



Ligule of $ florets obsolete. Upper leaves petiolate. 



Petioles winged. Receptacle- pitted 15. C. Newii. 



Ligule of $ florets present. Leaves usually not amplex- 

 icaul. 



Leaves distinctly petiolate 16. C. Eeudelotii. 



Leaves sessile or with short winged petioles. 

 Leaves white-tomentose beneath. 



Leaves glabrous above, serrulate 11. C. hypoleuca. 



Leaves tomentose above, revolute, \\ath one or 



two strong lateral teeth 18. (7. incana. 



Leaves pubescent, hispid or scabrid, green beneath. 

 Leaves oval or lanceolate, entire or distant- 

 toothed. Heads \-\ in. diam 19. C. 'pyrrh&pajp^a. 



Leaves linear, toothed or pinnatifid. Heads \ in. 



diam., in dense cymes 20. C. stricta. 



Of Conyza fasiigiata, Willd. ; DC. Prodr. v. 381, we have not seen tropical 

 African specimens. C. dongolends, Del. ; DC. 1. c. 388, described from very imperfect 

 material, is unknown to us. 



Conyza Kotsckyi, Schultz Bip. ex Schweinf. et Aschers. Enum. p. 284, name only, 

 non Eoiss., from Nubia, Kordofan and Bahr-el-Abiad, is Vicoa auriculata, Cass. 



1. C. persiceefolia, 0. ^ B. Extremities thickness of crow- 

 qnill, terete, striate, glabrons. Leaves elongate linear-lanceolate, 

 finely acuminate, tapering below to the narrovp-ly caudate subauricled 

 sessile base, minutely denticulate, glabrous, finely tomentose beneath, 

 3-5 in. long, ^-f in. broad. Capitula widely campanulate, oo-flowered, 

 on short slender unequal glabrous or puberulous pedicels, in terminal 

 divaricate corymbs, varying to ^J ft. diam. Scales of involucre at 

 length spreading, ^ in. long, linear-lanceolate, acuminate, glabrous or 

 nearly so, few outer shorter. Receptacle convex, shallow-foveolate, 

 with denticulate margins. Ray obsolete. Achenes glabrous. Pappus 

 subrufous. — Erigeron persiccefolmm, Benth. Fl. Nigr. 430. 



Upper Guinea. St. Thomas, Dow .' Abbeokuta, Irvivg / 



2. C. spinosa, Schultz Bip. mss. in Hb. Berol. Closely branched 

 spinous shrub, 3-4 ft. high ; older branches terete, glabrate, leafless ; 

 extremities leafy, terete, puberulous, armed with puberulous forking 

 spines. Leaves linear or narrowly spathulate, entire or tridentate, 

 strigulose, ^-J in. long, narrowed below, subamplexicaul. Capitula 

 widely campanulate, many-flowered, -J-J in. wide, on short peduncles, 

 few together at the ends of the branches. Scales of involucre linear- 

 lanceolate, subacute, pauciseriate, appressedly hairy on the back, 

 scarious on the margins, about ^V i^- wide. Receptacle elevated; 

 centre alveolate, margins toothed. Ray-florets filiform ; ligule 0. An- 

 ther-base bidentate ; tip ovate-oblong. Achenes compressed, with few 

 scattered hairs or glabrous. Pappus uniseriate, sorddd.— Erigeron spi- 

 nosus, Schultz Bip. in Schweinf. Fl. ^thiop. i. p. 148. 

 Wile Iiand. Abyssinia, 9,000-10,000 h. alt. Sohi/n per! 



3. C. Kochstetteri, Schultz Bip. in Rb. ScMmp. Abyss, i. n. 162. 

 Stock creeping or prostrate, branched ; branches herbaceous, erect 



