198 COMPOSITE FAMILY. 



37 ERIGEROTT, FLEABANE. (Name of Greek words, for spring and 



old man, siisffestcd probably by the hoary appearance of some vernal spvcies.) 



Eeioerojt speci(')SUM of Oregon is occasionally cultivated as a garden 



perennial, is more showy than any of the following, which are the common 



wild species of the country. 



§ I. Eays conspicuous : heads more or less corymbed : stem erect. 

 « Rap purple or purplish, very numerous (.'50 - 1.^0) : }mppus simple. % 

 E Philad61pllicum, Common F. Low grounds : 2° high, rather hairy, 

 with'oblong mostly entire and partly clasping stem-leaves, spatulate and toothed 

 root-leaves, and several heads ; the rays very many and narrow, pale reddish- 

 purple : fl. summer. ^ „ , t. nr • 

 / E. bellidifblium, Daisy-leaved F. or Robins Plantain. Moist 

 ground, soft-hairy, 1° - 2° high, with a cluster of rather large roundish root- 

 klcaves I'yinn- flat on the ground, the stem-leaves rather few and small ; heads 

 h - 9 and long peduncled, rather large, with about 50 linear light bluish-purple 

 rays : fl. late spring. 



» « Bays white, only about 30, rather broad.: pappus simple. ' % 

 E. v6rnuin. Low grounds from Virginia S. ; smooth, with oval or spatu- 

 late leaves all at the root, slender scape 1° - 2° high, with a few small heads : 

 fl. spring. 



* « * Bays white or nearly so, .50 or more, narrow : pappus douhk, the outer of a 



row of minute chaffy bristles or little scales. ® ® 

 E. Strigdsum, Smaller Daist-Fleabane. Fields : 2° - 4° high, 

 smoothish, or roughish with minute close-pressed hairs; leaves entire, the 

 lower spatulate and sleuder-petioled, the upper lanceolate ; rays pretty long : 

 fl. all summer. • ~ - 



E. tonuum, Laegek Daisy-Fleabane. Fields and waste places; a 

 common weed, 3° - 5° high, branched rtbove, roughish with spreading hairs ; 

 leaves ovate or lance-ovate, the lower ones coarsely toothed ; rays rather short, 

 often tinged with purple : fl. all summer. 



§ 2. Bays inconspicuous, scarcely longer than the cylindrical bell-shaped involucre 

 and the simple pappus, numerous, in more tlian one row. 



E. Canad6nse, Hok'seweed or Butterweed. A common weed in waste 

 or cult, ground, -bristly hairy ; with erect strict stem 1° - 5° high, linear leaves, 

 only the lowest ones cut-lobed, and very small panieled heads of whitish flowers, 

 all summer. ® 



38. BOLTONIA. (Named for S>. Bolton, an English botanist.) Wild 

 plants of low grounds S. & W., resembling Asters except in the akenes and 

 pappus : ray-flowers blue-pui-ple or nearly white ; disk-flowers yellow ; in 

 autumn. 2/ 



B. difrtisa, of Illinois & S., has small heads loosely panieled on the slender 

 open branches, which bear small awl-shaped leaves, those of the stem lance- 

 linear ; pappus of several bristles and 2 short awns. 



B. glastif61ia, from Penn. S. & W., haslewer larger and coryrabed heads, 

 lanceolate partly erect leaves, broadly winged akenes, and 2 or 3 short awns in 

 the pappus. 



B. asteroides, from Penn. S., less common, is verv like the last, but 

 with narrow margins to the akenes and no awns (only a few short bristles) in 

 the pappus. 



39. BB.ACH'S^COME. (Name in Greek means short tuft, from the pap- 

 pus, in which respect mainly it differs from the Daisy-genus.) 



B. iberidif61ia, cult, for ornament, from Australia, has slender branching 

 stems nearly 1° high, pinnately parted loaves with very slender divisions, anil 

 handsome heads with violet-blue ray-flowers and similar or darker purple 

 centre, produced all summer. ® 



