W23 



HEARTLEAF ARNICA 



Ar'nica cordifo'Iia 



Outside (ray) flowers of head petal-like, 7 to 

 13, about 1 in. long, toothed at tip, seed-bearing 

 (pistillate) 



Center (disk) flowers of head numerous, small, 

 yellow, tubular, perfect 



"Seed" (achene) narrow, 5- to 10-ribbed, 

 hairy, the tip encircled by a ring of fine white 

 bristles (pappus) which are rough to touch or 

 with .tiny barbs 



Flower heads usually solitary, sometimes 

 several, showy, pale yellow, stalked, erect in 

 bud 



Bracts in a series (involucre) surrounding 

 base of flower head, green, about % in. high, 

 equal, usually in a single row, densely soft- 

 hairy especially at base 



Leaves opposite; lowest pair rather long- 

 stalked, usually distinctly heart-shaped, and 

 coarsely toothed ; stem leaves 2 to 4 pairs, egg- 

 shaped or broadly lance-shaped and usually 

 somewhat heart-shaped at base; uppermost 

 leaves reduced, without stalks, narrower than 

 lower ones 



Stem erect, somewhat sticky-hairy 



Rootstock underground, slender, creeping 



