328 FLORA OF FHILADELFEIA. 



Perennial; heads 15-25 mm. broad; involucral bracts lanceolate, acu- 

 minate. 36. A. tenuifolius. 

 Annuals; heads 6-10 mm. broad; involucral bracts linear-subulate. 



37. A. siibulatus. 



1. Aster divaricatus L. M. p. 949. Woodlands. Autumn. 



la. Aster divaricatus cymulosus Burgess. M. p. 949. Woodlands. 

 Autumn. 

 Northampton— (P.). 



2. Aster tenebrosus Burgess. M. p. 950. Moist, dark woodlands. Autumn, 



Lancaster — {V .) . 



3. Aster Claytoni Burgess. M. p. 950. Sunny or slightly shady, rocky 



places. Autumn. 

 Bucks— k.r gas (Fr.). Nortimmpton— {F.) . 



4. Aster Schreberi Nees. M. p. 951. Borders of woods and along shaded 



fence-rows. Late summer. 

 Bucks— Rock Hill (Fr.). Northampton — (P.). 



5. Aster macrophyllus L. M. p. 951. Shaded places. Late summer. 



Fhila delphia — Fairmonut Park (Ja.), Wister (Re.), Wissahickon 

 (VP.). Bucks— Rock Hill (Fr.). Montgornery— 'billow Grove, Dr. J. B. 

 Brinton (B. C), Shannonville (Cr.). Uetau'ore — Near Media (Fu.), 

 Swarthmore (Ws.). C/iester— Westtown (W. Tr.). Lancaster— {P.). 

 Northa7npto7i — Easton, Forter (B. C). 



Camden — Timber Creek (C). Gloucester— Swedeshoro (Li.). Mon- 

 7nouth— Colt Neck (C). jfftinferdon— Prallsville, Stockton (C). 



New Castle— Common. 



6. Aster cordifolius L. M. p. 953. Woodlands. Autumn. 



Qa. Aster cordifolius polycephalus Porter. M. p. 953. Woodlands. 

 Autumn. 

 Bucks— (F.). Northampto7i—F,aaton, Forter (B. C). 



7. Aster Lowrieanus Porter. M. p. 953. Woods. Autumn. 



J5«cA;s— Argus (Fr.). Montgomery— (P.). Chester— Coatesville, E. E. 

 Stone (B. C). Northampt07i—Ea&ton, Forter (B. C). 

 7a. Aster Low^rieanus lancifolius Porter. M. p. 954. Woods. Autumn. 



B7icks—(P.). Montgomery— (P.). Northampton— {P.). 

 7b. Aster Low^rieanus Bicknellii Porter. M. p. 954. Woods. Autumn. 



Bucks— Argus, Rock Hill (Fr.). Northampton— {P.). 



8. Aster sagittifolius Willd. M. p. 954. Dry ground. Autumn. 



Bucks— Rock Hill (Fr.). Delaware— 'Near Haverford (Le.), Ridley 

 Creek above Media, Dr. Geo. Smith (B. Sm.). C/iesf er—Greentree (Te.). 

 Lehigh— (P.). Northampton— (P.). 



Mercer— Princeton (C). Hunterdon — liocktown, Sergeantsville (C). 



New Castle — General and common. 



9. Aster undulatus L. M. p. 955. Dry copses. Autumn. 



9a. Aster undulatus loriformis Burgess. M. p. 955. Dry copses. 

 Autumn. 

 Lancaster— (P.). Dauphin— (P.). 



10. Aster patens Ait. M. p. 955. Dry, open places. Autumn. 



