Pl.ex.caL 39. COMPOSITiE, C. 240. Tussilago. 473 



and consumptive cases; a strong decoction of the dried 

 leaves of service in scrofulous cases; dried leaves the basis of 

 cephalic snuffs ; down on the under surface used as tinder. 



LXVI. 241. PETASITES. Dioscorides. Biitler-lur. 

 Pericline cylindrical, conical, becomes bellied, and then 

 entirely turned back; scales many, linear, equal, in one 

 series; calathides flosculous, flat at top; Jiowers all fertile; 

 of the centre funnelshape, equal, 5-toothed, androgynous; 

 of the rays threadlike, oblong, slightly 5-toothed, female; 

 sometimes flowers all of one sort; cliiianthus flat, dotted, 

 naked ; akenium roundish ; pappus hairlike, rough, sessile. — 

 Herb flowering before the leaves appear; calathides nu- 

 merous ; peduncles bracteated ; leaves radical. 



Petasiies vulgaris, ■■- "^-^^ ■ Common hullerhur. 



Thyrse oblong; leaves' ohXong, heartshape, unequally 

 toothed, beneath downy, lobes approximating. 



Petasites, Raii Syn. 179, 1 ; Ger. em. 814, 1. 

 Petasites vulgaris, Park. 419. 

 Tussilago Petasites, Lin. S. P. 1215. 

 Pestilent wort. 



Moist meadows; perennial; March and April. 



Rhizoma thick, fleshy, creeping ; scales upright, woolly ; 

 leaves very large ; bractece lanceolate ; thyrse ovate ; Jiowers 

 uniform, all tubular, hermaphrodite ; pappus as long as the 

 pericline. — Rhizoma resinous, bitter, acrid, and strong 

 smelling; the leaves afford shelter to small animals. 



^. elongata. Thyrse oblong ; Jiowers 1 to 3 hermaphro- 

 dite, rest all female, irregularly 5-toothed; pappus shorter 

 than the pericline. 



Petasites major, floribus pediculis longis insidentibus, Dillen in Raii 

 Syn. 179,2. 



Tussilago hjbrida, Lin. S. P. 12U. 



LXVII. 242. EUPATORIUM. Dutch-agrimony. 



Pericline oblong; scales few, oblong, equal," slightly im- 

 bricate ; calathides flosculous ; Jiowers few, all hermaphro- 

 dite; corollae tubular, regular, 3-cut; pollen white; style 

 long; branches linear, divaricating; stigmata glandular; 

 clinanthus convex, naked, bald ; akenium 4-sided, streaked ; 

 pappus hairlike, rough. — Leaves opposite; calathides co- 

 rymbose. 



