Nidorella) LXXIII. COMPOSITH (OLIVER AND HIERN). 311 
Mozamb. Distr. Cabaceira and Sena, Dr. Peters ! Shupanga and Shire valley, 
Drs, Kirk! and Meller ! M’geta, Zanzibar, Speke and Grant ! 
Nearly allied to N. auriculata, DC. of the Cape. 
22. CONYZA, Less. ; Benth. et Hook. f. Gen. PI. ii. p. 283. 
Capitula heterogamous, disciform ; outer florets Q 2-0-seriate, of 
disk all or most hermaphrodite. Involucre campanulate ; scales 2—o0- 
seriate, imbricate, narrow-linear or lanceolate, outer smaller. Recep- 
tacle plane or convex, naked or foveolate and fimbrilliferous. Corolla 
of ? florets filiform, narrow-tubular, ligule 0 or minute; of 8 florets 
tubular, slightly dilated above, 5-toothed. Anther-base obtuse, entire. 
Style-branches usually narrow, with lanceolate appendix. Achenes 
small, compressed. Pappus 1-seriate (or rarely 2-seriate).—Herbs or 
more rarely shrubs. Leaves alternate, entire dentate or pinnatifid. 
Capitula small or of medium size, usually cymose corymbose or vari- 
ously panicled, yellowish (or outer florets whitish). 
A considerable weed-like genus widely diffused throughout the warmer regions of 
both hemispheres. Most of the following species are peculiar to this Flora. 
Ligule or Q florets obsolete. Leaves (upper) amplexi- 
caul. 
Scales of involucre narrow, linear-lanceolate, acute, 
greenish, usually about +) in. broad. . . 
Leaves glabrous, finelyacuminate. . . . . . - J. C. persicefolia. 
Leaves usually more or less hairy, not narrowly acuminate. 
Leaves entire, dentate or loosely pinnatifid. 
Heads usually 3-3 in. diam. . 
Shrubby, spinosee. . . . . « . + + + 2 C. spinosa, 
Unarmed herbs. 
Shortly hirsute. Leaves oblong or ovate- . 
lanceolate, toothed or entire. . . . 38. C. Hochstetteri. 
Setulose or glabrate. Leaves ovate or 
ovate-lanceolate, narrowed below mid- 
dle, serrate er 
Puberulous or glabrate. Leaves oblanceo- 
late or linear, toothed. . . .. - 
Puberulous. Leaves linear or spathulate- 
oblong, entire . . . . . © + + 
Heads }-3 in, diam. Leaves toothed or pinna- 
4. C. Steudelii. 
5. C. abyssinica. 
6. C. Vatkeana. 
tifid. 
Pedicels short. Achenes thinly pubes- . 
cent. 2... we “ Achenes 7. C. egyptiaca. 
Pedicels ranging up to 14 in. Achenes : 
glabrous. . . toe ee ee BS. senegalensis. 
Leaves lanceolate, amplexicaul, acutely incised. . 9. C. pectinata. 
Seales of involucre oblong or lanceolate, often pur- 
plish., 3, in. broad more or less. 
Tufted herb of 1-2 in. Inner involucral scales 
acuminate. Achenes pilose . . . - + + 10. C. nana. 
Herb of 3-4 ft. Involucral scales not acuminate, : 
pubescent. Achenes pilose . . . 11. C. variegata. 
3-2 ft. Involucral scales obtuse, pubescent. 
Achenes glabrate. . 2. 2. 2. 1 2 ee 
1-2 ft.or more. Involucral scales acute or acu- 
minate, pubescent. Achenes shining, glabrate 13. C. clarenceana, 
Slender, 2 ft. or more. Involucre glabrous, scales 
12. C. Gouani. ? 
