125. COMPOSITAE 251 



Lean, Peoria, and Winnebago 

 counties. Sejjt. [A. ericoides ^ 



novac-angliae BenkeJ 



X ^- amethystinus Nutt. 



27. Bracts with broad obtuse squarrose 

 tips; rays white, 3-6 mm lonsj^. 

 28. Stem with spreadintj,' or sht^htly 

 reflexed hairs; bracts (at least 

 the outer) hispidulous on the 

 back; dry ground, prairie 

 soil, often along roads, com- 

 mon. Sept. -Oct 



A. cxiguus (Fern.) Rydb. 



28. Stem with appressed or ascend- 

 ing short hairs, or the lower 

 part glabrous; bracts smooth 

 or nearly so on the back; in 

 habitats similar to the preced- 

 ing, but less common; in the 

 northern half of 111. July- 

 Oct. [A. multiflorus Ait.; A. 



stricticaulis Rydb.] 



A. ericoides L. 



23. Bracts thin, scarious, not subulate-tipped 

 or bristly-ciliate. 

 29. Rameal leaves linear, small, numerous, 

 1 mm wide. 

 30. Rameal leaves \ery unecjual ; in- 

 volucre 3-3.5 mm high; bracts 

 thin, narrowly linear, with linear- 

 oblanceolate green midrib; rays 

 white, 3-6 mm long; fields, road- 

 sides, s. III. Sept. -Oct 



A. vimineus Lam. 



30. Rameal leaves uniform or nearly 



so ; involucre 4-6 irmi high ; bracts 

 with conspicuous rhombic green 

 tips ; rays pale lavender, 5- 1 mm 

 long; moist sandy soil in the 

 northern half ot 111. Aug. -Sept. 

 [A. duinosus \ar. eordifolius 

 sensu Fern, quoad pi. 111., non 

 (Michx.) T. & G.] Bushy Aster 

 A. duitiosus L. 



29. Rameal leaves usually broader, fewer. 



31. Leaves linear, acuminate, ascend- 



ing, 2-5 mm wide, entire, sca- 

 brous margined, otherwise gla- 



