198 COMPOSITE FAMILY. 



37. ESiGEROIJ", FLEABANE. (Name of Greek words, for spring anH 



old man, suggested probably by the hoary appearance of some vernal species. ) 



Eeigebon spt;ci6suM of Oregon is occasionally cultivated as a garden 

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

 wild species of the country. 



§ 1. Rays conspicuous : heads more or less corymbed: stem erect. 

 » Rays purple or purplish, very numerous (50 - 150) ; pappus simple. H ^ 



E. Philad61phicuin, Common F. Low grounds : 2° high, rather hairy, 

 with oblonii- 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. , „ ht • » 



E. bellidifdlium, Daisy-leaved F. or Robin's Plantain. Moist 

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

 leaves lying flat on the ground, the stem-leaves rather few and small ; heads 

 1-9 and long peduncled, rather largo, with about 50 linear light bluish-purple 

 fays : fl. late spring. 



» * Rays white, only about 30, rather broad : pappus simple. 11 



E. v6rnum. 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. 



* * « Rays white m nearly so, 50 or more, narrow : pappus double, the outer of a 

 row ofminuie chaffy bristles or little scales, (j) ® 



E. strig6sum, Smaller Daisy-Fleabane. Fields : 2° - 4° high, 

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

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

 fl. all summer. 



E. ^nnuum, Larger Daisy-Fleabane. Fields and waste places; a 

 common weed, 3° - 5° high, branched above, 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. Rays inconspicuous, scarcely longer than the cylindrical bell-shaped involucre 

 and the simple pappus, numerojts, in more than one row. 



E. Canad^nse, Horsewebd 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 panicled heads of whitish flowers, 

 all summer. ® 



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

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

 pappus : ray-flowers blue-purple or nearly white ; disk-flowers yeUow ; in 

 autumn. 2/ 



B. difftisa, of Illinois & S., has small heads loosely panicled 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. glastifblia, from Penn. S. & W., has fewer larger and corymbed 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 very like the last, but 

 with narrow margins to the akenes and no a%vns (only a few short bristles) In 

 the pappus. 



39. BRACHYCOME. (Name in Greek means short tuft, from the pap- 

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



B. ib©rdif61ia, cult, for ornament, from Australia, has slender branching 

 stems nearly 1° high, pinnately parted leaves with very slender divisions, and 

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

 centre, ]>roduced all summer. ® 



