6o8 



COMPOSITAE 



Heads mostly less 

 than 13 mm. 

 broad. 

 Blades of the stem 

 Ieavesof a linear- 

 lanceolate or 

 subulate type. 

 Heads scattered, 

 12-18 mm.broad. 

 Heads numerous, 

 8-14 mm. 

 broad. 

 I n vol ucre 

 hemis- 

 pheric, 5-6 

 mm. high. 

 I n vo 1 ucre 

 top-shaped, 

 5 mm. high 

 or less. 

 Heads racemose and dispos- 

 ed on one side of the 

 branches. 

 Stem leaves not linear 

 or linear- lanceolate, 

 finely toothed. 

 Stem leaves linear or 

 linear- lanceolate. 

 Plant very rough and harsh; 

 bracts of the involucre obtuse. 



33 



A. Tradescanti. 



34. A. Faxoni. 



35. ericoides. 



36. A. depaitperatus. 



37. A. lateriflorus. 



38. A. vimineus. 



39. A. multiflorus. 



i. A. tenuifolius L. In salt marshes: coast of Mass. to Fla. 

 Throughout the coastal marshes in our range. 



2. A. subulatus Michx. In salt marshes: coast of N. H. to Fla. 



Throughout the coastal marshes in our range, and up the tidal 

 rivers a few miles, especially the Hudson. 



3. A. divaricatus L.* (Including Aster carmesinus, tenebrosus, 



stilletiformis, excavatus, castaneus, Claytoni, chlorolepis and 

 perhaps others, all described by E. S. Burgess, and A. 

 sitbinteger Bicknell.) In open woodlands and thickets, in 

 rather dry soil: Que. to Man., Ga. and Tenn. Variable and 

 often exhibiting some constancy in its different forms. 



Common throughout the range, except the pine-barrens and the 

 region to the east and south of them, there unknown. 



* The new species of Biotian asters described by Professor Burgess (Mem. Torr. 

 Club 13: 1-419. 1906) are as yet too imperfectly understood by local botanists to 

 enable me to record their dis'ribution. 



