92 BOTANY OF LA SALLE COUNTY. 



A. umbella tus. Smooth, leafy to top, 1 to 7 ft;. 



leaves long-, acute at both ends; heads in flat 



corymbs. 

 A. linarifolius. Several stems from a woody root, 



leaves about 1 in. long- narrow, rough; heads 



rather larg-e, rays Vi. 6 to 15 in. Sandy lands 



and among- rocks. A handsome plant. 

 ERIGERON. Fleabane. Mare's Tail. More or 



less hairy plants with W. or P. disc. Rays 



thread-like, very many. M. Aug\ 

 E. Canadensis. Bristly-hairy, erect; leaves narrow, 



lower toothed, flowers small. 1 to 5 ft. 

 E. annuas. Stout, 3 to 5 ft. hairy; lower leaves 



ovate, toothed with marg-ined petioles, upper 



entire. 

 E. strig-osus. Smaller and less branched than 



annuus; heads smaller with long-er rays. Ju. 



Aug-. 

 E. bellidifolius. Robin's Plaintain. Hairy; heads 



few 1 to 9, on slender peduncles; rays rather 



broad. B. P. M. 

 E. Philadelphicus. Common Fleabane. Leaves 



thin with a broad midrib, oblong-; heads several 



small. Ju. Aug-. 

 ANTENNARIA. P. Everlasting-. White-woolly 



herbs; leaves narrow, entire; flowers Y. 

 A. plantag-inifolia. Plantain Leaved Everlasting-. 



Ladies' Tobacco. A low plant spreading- by 



runners and offsets, stam. and pist- flowers on 



different plants; upper surface of the oval- 



spatulate, petioled root leaves when old are G., 



lower W. 6 to 15 in.; M. Poor lands. 

 GNAPHALIUM. A. Cudweed. Balsam Woolly 



herbs, very branching". 

 G. polycephalum. Erect, W. fragrant; scales 



