COMPOSITiE. 155 



sub-acute, undivided or pinnatifid or runcinate-pinuatifid, with the 

 lobes usually not longer than broad ; middle and upper stem-leaves 

 lanceolate, generally undivided, abruptly acuminate, amplexicaul 

 with rather short rounded adpressed auricles ; all more or less 

 undulated and spinous - denticulate at the margins. Anthodes 

 rather few, in a corymb or umbellate corymb. Peduncles and phyl- 

 laries with scattered elongate yellowish-green gland-tipped hairs 

 (very rarely glabrous). Achenes slightly compressed, with numerous 

 nearly equal transversely rugose ribs. 



In fields and cultivated ground, waste places, and by the banks 

 of ditches. Common, and generally distributed. 



England, Scotland, Ireland. Perennial. Summer 

 and Autumn. 



Hootstock emitting numerous white fleshy subterranean stolons, 

 which send up small tufts of radical leaves. Plowering - stems 

 18 inches to 5 feet high, hollow, angular from the presence of 

 elevated lines decurrent from the midribs of the leaves, generally 

 simple, but in large examples, producing branches terminated by 

 corymbs in the axils of the upper leaves. Leaves 6 inches to 

 1 foot long, varying much in the depths of the sinuations or 

 incisions, and sometimes undivided, the upper leaves generally so ; 

 margins unequally denticulate, the denticulations sub-spinous at 

 the apex. Anthodes 1 to 2 inches across when expanded. Plorets 

 bright-yellow. Achenes light reddish-brown. Pappus white, 

 silky, scarcely exceeding the phyllaries. Plant glabrous, except 

 the upper part of the stem, peduncles, and phyllaries, which are 

 clothed with long hairs tipped with pale greenish-yellow glands. 

 Leaves green and shining above, glaucous beneath. 



On the Continent a variety with the peduncles glabrous has 

 been observed, but it has not been noticed in Britain. 



A very tall and luxuriant form, with the lobes of the leaves 

 often twice as long as broad, occurs in marshy places and 

 by the sides of ditches : this has frequently been mistaken for 



* -P * Corn Sow-thistle. 



French, Laitron des Cliamps. German, Feld-Saudistel. 



SPECIES IV.— S O N C H U S PALUSTRIS. Linn. 



Plate DCCCXIY. 



BUlot, Fl. Gall, et Germ. Exsicc. No. 3429. 



Reich. Ic. Fl. Germ, et Helv. Vol. XIX. Tab. MCCCCXIV. 



Perennial, without radical leaves. Rootstock not creeping, 

 without elongate stolons. Stem quite simple up to the inflo- 



