26H COMPOSITE. (COMPOSITE FAMILY.) 



margins, entire, the upper oblong-lanceolate and pointed, closely sessile or 

 partly clasping, the lower spatulate and petioled ; rays (more than 100, purple) 

 more than twice the length of the hoary-hispid involucre; pappus double, the 

 outer of minute bristles. Plains of N. Wise., and westward. June. 



7. E. hyssopifolius, Michx. Slightly pubescent, slender (6- 12' high), 

 from filiform rootstocks ; leaves short, very numerous, narrowly linear ; 

 branches prolonged into slender naked peduncles, bearing solitary small 

 heads; rays 20 -.'30, rose-purple or whitish. (Aster graminifolius, Pursh.) 

 Northern borders of N. Eng., L. Superior, and northward. 



8. E. bellidifolius, Muhl. (ROBIN'S PLANTAIN.) Hairy, producing 

 offsets from tin- base ; stew simple, rather naked alovf, bearing few (1 -9) large 

 heads on slender peduncles; root-leaves obovate and spatulate, sparingly toothed, 

 the cauline distant, lanceolate-oblong, partly clasping, entire ; rcti/s (about. 50) 

 rather broad, liijld bluish-purple. Copses and moist banks; common. May. 



9. E. Philadelphicus, L. (COMMON FLEABANE.) Hairy; stem leafy, 

 corymbed, bearing several small heads; leaves thin, with a broad midrib, ob- 

 long; the upper smoothish, clasping by a heart-shaped base, mostly entire, the 

 lowest spatulate, toothed ; rai/s innumerable and very narrow, rose-purple or 

 flesh-color. Moist ground ; common. June -Aug. 



* * # Perennial by rosulate offsets, ivith scape-like stems ; pappus simple. 



10. E. nudicaulis, Michx. Glabrous; leaves clustered at the root, 

 oval or spatulate; scape leafless, slender (1-2 high), bearing 5-12 small 

 corymbed heads; rays white. (E. vernum, Torr. $ Gray). Low grounds, E. 

 Va. and southward. May. 



27. BACCHARIS, L. GROUNDSEL-TREE. 







Heads many-flowered ; the flowers all tubular, dioecious, i. e., the pistillate 

 and staminate borne by different plants. Involucre imbricated. Corolla of 

 the pistillate flowers very slender and thread-like ; of the staminate, larger 

 and 5-lobed. Anthers tailless. Achenes ribbed ; pappus of capillary bristles, 

 in the sterile plant scanty and tortuous ; in the fertile very long and copious. 

 Shrubs, commonly smooth and resinous or glutinous. Flowers whitish or 

 yellow, autumnal. (Name of some shrub anciently dedicated to Bacchus.) 



1- B. halimifolia, L. Smooth and somewhat scurfy; branches angled; 

 leaves obovate and wedge-form, petiolate, coarsely toothed, or the upper entire ; 

 heads scattered or in leafy panicles; scales of the involucre acutish. Sea 

 beaches, Mass to Va., and southward. Shrub 6 -12 high; the fertile plant 

 conspicuous in autumn by its very long and white pappus. 



2. B. glomeruliflora, Pers. Leaves spatulate-oblong, sessile or nearly 

 so ; heads larger, sessile in the axils or in clusters ; scales of the bell-shaped 

 involucre broader, very obtuse. Pine barrens, E. Va. (?), and southward. 



28. PLUG HE A, Cass. MARSH-FLEABANE. 



Heads many-flowered ; the flowers all tubular; the central perfect, but sterile, 

 few, with a 5-cleft corolla ; all the others with a thread-shaped truncate corolla, 

 pistillate and fertile. Involucre imbricated. Receptacle flat, naked. Anthers 

 with tails. Acheues grooved; pappus capillary, in a single row. Herbs, 



