Senecio. 1015 
D.1. D. i. D. a. sept. A common plant in deep sandy places. 
Local name: afrash; sekran; ribyan. 
Also known from Algeria, Tunisia, Tripolitania and Arabia Petraea. 
586. (46.) Senecio Linn. 
Flower-heads homogamous and discoid or heterogamous and 
radiate. Involucre of nearly equal bracts apparently in a single 
row, linear or very rarely ovate, the margins often scarious and im- 
bricate, with or rarely without a few small ones at the base passing 
into the bracts on the peduncles. Receptacle naked or pitted, the 
borders of the pits rarely toothed or produced into a few short 
scales. Flowers of the ray when present female or rarely neuter, 
ligulate. Disk-flowers tubular, hermaphrodite, 5-toothed. Anthers 
obtuse at the base, the upper portion of the filament often thickened. 
Style-branches truncate, usually bearing a tuft of minute hairs and 
very rarely a short obtuse appendage. Acheunes striate or angular. 
Pappus of numerous simple scabrous or denticulate bristles. — Herbs 
or very rarely shrubs, glabrous-pubescent or clothed with cottony wool. 
Leaves alternate, entire or divided, often rather thick. Flower-heads 
terminal, solitary, corymbose or paniculate. Flowers usually yellow, 
rarely purple or white. 
The largest genus among Compositae, and ranging nearly over the whole 
world, although the individual species are often very local. 
A. Rays none, or much shorter than the inyolucre. 
i Achenes, OlankOUd sf xP a ee ne 1. S. belbeysius. 
II. Achenes pubescent. 
a) Cyme compact, dense. 
1. Stems-leaves cordate clasping at the 
RE Sao iN te mrielc te ais eee 2. S. flavus. 
2. Stems-leaves half-clasping at the base 3. S. vulgaris. 
by Gyme- broad. loose *. 2. + fe aes 4. S. aegyptius. 
B. Ray as long as the involuere ....... 5. S. coronopifolius. 
1407. (1.) Senecio belbeysius Del. Ilustr. Flor. d’Eg. (1813), 
p- 126 tab. 45. — Boiss. Flor. Or. I, p. 385. — Muschler in Engler’s 
Bot. Jahrb. XLII (1908), p. 54. — Aschers.-Schweinf. Ill. Flor. d’Eg., 
p- 91 no. 580. — Sickenberg. Contrib. Flor. d’Eg. p. 247. — Acleia 
Belbeycia DC. Prodrom. VI, p. 340. — A annual plant, 30—50 cm 
high, or sometimes somewhat more, glabrous; stems ascendent 
branching from the base, loosely corymbosed. Lower leaves petioled, 
ovate, crenate and lobate; stem-leaves sessile half-clasping with a 
auricled base. oblong-lanceolate, pinnatifid or partite; peduncles longer 
