356 Yellow to Orange Flowers 



smaller than those of the Heart-leaved Arnica, and the pale 

 yellow rays have a single notch at the apex. The pappus is 

 tawny. 



Arnica Parryi, or Parry's Arnica, bears a curious flower 

 with no rays at all, but only a receptacle of disk-flowers en- 

 closed in a green involucre. These flower-heads usually 

 grow in threes at the summit of the three short-branched 

 stems. They appear to have simply lost their rays in the 

 early stage of decomposition, but such is not the case ; they 

 never had any. 



Arnica louiscana, or Schaeffer's Arnica, is a slender hairy 

 plant with nodding flower heads of eight to ten noticeably 

 pale lemon-yellow rays, and usually three pairs of leaves, the 

 lower ones at the base of the stem being elliptical, entire or 

 denticulate. The bracts of the campanulate brownish- 

 purple involucre are lanceolate, acute and densely glandular- 

 hairy at the base. The pappus is tawny. 



Arnica fulgens, or Notched Arnica, has oblong lanceolate 

 pointed' leaves, the lower ones being toothed and stalked, 

 and the upper ones sessile and entire. The flower heads 

 grow on long slender hairy stalks, and the involucre is cam- 

 panulate, its bracts being pointed and covered with long 

 white hairs. The bright yellow rays are twice notched at 

 the apex and the pappus is white. 



Arnica gracilis, or Slender Arnica, is a smooth slender 

 branched plant with slightly hairy leaves, the basal ones be- 

 ing broadly ovate, stalked, toothed and three-ribbed, as are 

 also the two pair of stem-leaves, but the top pair are sessile. 

 The flower heads have long narrow bright yellow rays with 

 a single notch at the apex, and the twelve to fifteen invo- 

 lucral bracts are lanceolate acuminate and hairy, as are also 

 the seeds. The pappus is white. 



