Senecio. ] LXXIII. COMPOSITE (OLIVER AND HIERN). 
Cyme compact, dense 
Cyme broad, rather lax 
Leaves undivided 
Capitula radiate. 
Leaves fleshy, linear or with linear lobes . . . 
Leaves not or scarcely fleshy; lobes usually not 
linear, 
Ligule of the ray-florets very small. Bracts of 
_ the calyculus lanceolate-acuminate . . . 
Ligule of the ray-florets of moderate size. Bracts 
of the calyculus subulate or filiform . 
Root perennial. 
Stem rigid or wiry, not fleshy. 
Appendix of the style-branches long and tapering. In- 
volucre with a broad flat base. 
Leaves sessile . 
ves petiolate . 2. 2. 1. 1 1 ee ee 
Appendix of the style-branches short or obsolete. 
Tnvolucre with a campanulate or turbinate base. 
Habit erect or ascending, not cespitose. 
Herbs or undershrubs. 
Florets yellow. 
Capitula discoid, without rays. 
Rhizome tuberous. Heads narrowly tur- 
binate . 2... ww ee 
Root thick, woody. Heads campanulate 
Capitula radiate (or in 8. steudelioides with 
inconspicuous or obsolete rays). 
Inflorescence few (3-13)-headed, lax . 
Inflorescence many-headed or dense. 
Calyculus obsolete . . . . =. . 
Calyculus present. 
Stem leafy below, with few leaves 
above . . ee coe 
Stems leafy above. 
Involucres narrowly campanulate, 
of 8-10 bracts cee 
Involucres campanulate or hemi- 
spherical, of 13-30 bracts. 
Leaves undivided. 
Achenes glabrous. 
Involucres campanulate, of 
13-20 bracts. 
Leaves from ovate or ob- 
long to lanceolate. 
Achenes black or dark 
brown. 
Leavesgreen on both 
sides oe 
Leaves white - to- 
mentose_ be- 
neath . 
Achenes pale oe 
Leaves linear-lanceolate 
Leaves elongate-linear- 
lanceolate + 
Involucres hemispherical, 
of 25-30 bracts 
Achenes setulose . - + 
409 
4. S. vulgaris. 
5. 8. arabicus. 
6. 8. Schimperi. 
7 
. S. coronopifolius. 
8. S. pinnatipartitus. 
9. S. Perrottetii. 
10. S. picridifolius. 
11. S. macropappus. 
12. S. tuberosus. 
13. S. Hochstetteri. 
14. 8. paucifolius. 
15. 8. bupleuroides. 
16. 8. lasiorhizus. 
17. S. confertus. 
18. S. subsessilis. 
19. 8. Burtoni. 
20. 8. ochrocarpus. 
21. &. Steudelit. 
22. S. Fresenii. 
23. S. Schultzit. 
24. S. myriocephalus. 
