354 Yellow to Orange Flowers 



both tubular and radiate flowers; receptacle flat; rays slightly toothed 

 at the apex. 



This is the most common species of Arnica in the moun- 

 tains, and is a handsome plant, standing from one to two 

 feet high. It has pale green hairy leaves, which are 

 markedly heart-shaped at the base, and many attractive blos- 

 soms composed of light golden rays, their deep yellow cen- 

 tres consisting of numerous disk-flowers. These blossoms, 

 which are enclosed in a hairy involucre, formed by a series 

 of narrow green bracts, grow singly or in pairs at the ends 

 of the long slender stalks. The pappus is white. 



Arnica latifolia, or Broad-leaved Arnica, has rather 

 slender stems and radical cordate petioled leaves, the upper 

 ones being in two or three pairs, oval, usually sharply 

 toothed, and. closely sessile by a broad or contracted base. 

 The flower heads grow on long slender hairy stalks in the 

 axils of the upper leaves, the yellow rays have two notches 

 at the apex, and the bracts of the involucre are oblong with 

 a wide base and pointed apex. . The pappus is white. 



Arnica alpina, or Alpine Arnica, is a graceful delicately 

 formed plant, with long, narrow, toothed leaves, and a single 

 flower with ten to fifteen rays, twice notched at the apex, 

 terminating each stem. It also frequently has two addi- 

 tional flowers springing from the axils of the upper leaves. 

 Several pairs of sessile leaves grow on the stems, and alto- 

 gether the plant presents a more slender, refined appearance 

 than do either of the two preceding species. 



Arnica Chamissonis, or Chamisso's Arnica, is an ex- 

 tremely hairy species usually found near water. The leaves 

 are very long, narrow and slightly toothed, the lower ones 

 tapering into a marginal stalk and the upper ones being 

 broad at the base and somewhat clasping. The flowers are 



