I 



SYNGENESIA— POLYGAM.-SUPERF. Senecio. 431 



Root and herbage so like the last, which is perhaps equally common, 

 that the two species have, by most botanists, been confounded. 

 They are both downy, unpleasantly scented, and agree in their 

 upright, wand-like, furrowed stem, clothed with numerous leaves, 

 beset with small, short, axillary branches, panicled, corymbose, 

 and many-flowered, at the summit, 3 or 4 feet in height. But 

 the leaves of the present are not so remarkably dilated at the 

 base, nor so much subdivided. The Jlowers are similar, except 

 that the calyx of S. sylvaticus has, in all its scales, the black 

 withered tips characteristic of the genus, and the outer ones, 

 besides that difference, are much shorter, closer, blunter, and 

 broader, than in S. lividus. 



The perennial plant, of which Ruppius adopts the definition from 

 Ray, is our S. tenuifolius. 



*** Fl. isoith spreading rays. Leaves pinnatifid. 



*5. S. squalidus. Inelegant Ragwort. 



Rays spreading, elliptical, entire. Leaves smooth, pinna- 

 tifid, with distant, and somewhat linear, segments. 



S. squalidus. Linn. Sp. PIA2\S. Willd.v.Z.\9^\. FLBr.883. 

 Engl. Bot. V. 9. t. 600. Bertolon. Am. ItaL 45. • 



S. coroUis radiantibus planis calyce longioribus integris, foliis pin- 

 natifidis : laciniis lanceolatis distantibus. Linn. Hort. Ups. 260. 



S. chrysanthemifolius. Bivona Bernardi Cent. 2. 52 ; from the au- 

 thor. 



Jacobsea sicula, chrysanthemi facie. Bocc. Sic. 66. t. 36. 



J. chrysanthemi facie. Cupan. Panph. ed. 2. t. 1 62./. 1. 



J. minor, abrotani foliis. Barrel. Ic. t. 262./. 2. 



On walls at Oxford. 



Very plentiful on almost every wall in and about Oxford, where it 

 was first noticed by Sir Joseph Banks. Dillenius sent seeds to 

 Linnaeus, but whether he gathered them from the Oxford garden, 

 or from the walls of the town, no memorial appears. It is not 

 improbable that the plant was originally naturalized there from 

 the garden, being really a native of Sicily. 



Annual. June — October. 



Root fibrous. Stem erect, branched, leafy, smooth, or a little 

 hairy, 1 2 or 18 inches high. Leaves nearly or quite smooth, 

 bright green, either sessile, or somewhat clasping, all variously 

 pinnatifid, jagged, and sharply toothed ; the lower ones stalked, 

 and less divided ; the upi)er often much dilated and rounded at 

 the base ; the under side often acquires a violet hue. Fl. loosely 

 corymbose, terminal, erect, not numerous, accompanied with 

 small awl-shaped bracteas on the partial stalks. Cal. broad, 

 almost hemispherical, smooth ; the inner scales pale at the 

 point ; outer rather few, small, lax, tipped with black. Florets 

 all of a bright golden yellow ; those of the disk very numerous j 



