270 



comp6sit;e 



A. Absinthium, but smaller ; leaves twice pinnatifid with many, very 

 narrow, blunt segments, with white down on both sides ; heads in 

 racemes, drooping or erect. — Salt marshes ; frequent. — Fl. July 

 — September. Perennial. 



5.* A. Stelleridna, a densely white-felted species, with pinnati- 

 fid leaves, with broad, 

 obtuse lobes, and a 

 nearly simple raceme 

 of large, erect flower- 

 heads, is naturalised in 

 places on the coast. 



23. Tussilago 

 (Colt's-foot).— Rhizome 

 creeping ; leaves large, 

 radical ; heads solitary, 

 yellow, many-flowered ; 

 bracts narrow, in 1 row ; 

 receptacle naked ; ray- 

 florets narrow, in several 

 rows ; disk-florets few ; 

 pappus of slender, silky 

 hairs. (Name from the 

 Latin tussis, a cough, 

 from the use to which 

 it is applied.) 



1. T. Far jar a (Colt's- 

 foot ). — T he only 

 species ; leaves, which 

 do not appear until 

 the flower-heads are 

 withered, roundish, 

 cordate, and angular, 

 cobwebby above, with 

 dense, white down be- 

 neath ; peduncles with 

 scale-like bracts, elon- 

 gating after flowering ; heads bright yellow, about 1 inch across, 

 drooping before expansion ; pappus snow-white. — Clayey fields ; 

 abundant. A pernicious weed, the leaves of which are made 

 into cigars for asthmatic persons. The down on their under 

 surfaces was formerly used as tinder, and the goldfinch fre- 

 quently lines its nest with the pappus. — Fl. February, March. 

 Perennial. 



petasItes hybridus (Common Butter-bur). 



