48 MIDDLESEX FLORA. 



A. Novi Belgii, L. (A. longifolius, Lam., Man.) 



Widely distributed; not uncommon. Occasional with white 



flowers. Aug.-Oct. 

 A. Novi Belgii, L., var. litoreus, Gray. 



Not uncommon near salt marshes. Sept.-Oct. 



<; Steins rigid, low, or sometimes 3 or 4 feet high, and then panicu- 



lately much branched, very leafy ; leaves thickish and firm, very 



smooth, (rarely upper face somewhat scabrous), oblong to lanceo- 

 late, upper partly clasping and sometimes auriculate : bracts of the 



involucre loosely imbricated in several ranks, outer commonly 



spatulate, all but innermost with broadish or obtuse herbaceous and 



mostly thickish tips." Syn. Fl., N. A. 

 A. puniceus, L. 



Common. Aug.-Oct. 

 A. puniceus, L., var. lucidulus, Gray, (var. vimineus, Man.) 



Maiden (H. L. Moody) ; Medford (L. L. Dame). Sept.-Oct. 

 A. amethystinus, Nutt. 



Westford (Misses Fletcher and Hodgman) ; Cambridge (H. L. 



Moody); Arlington (A. E. Verrill) ; Belmont (Wm. Boott). 



Scarce. Aug.-Sept. 

 A. Novae Angliae, L. New England Aster. 



Rather common. Aug.-Oct. 

 A. acuminatus, Michx. 



Common. Aug.-Sept. 

 A. nemoralis, Ait. 



Tewksbury (Wm. Boott) ; Dracut (Dr. C. W. Swan) ; Long Pond T 



Melrose (H. L. Moody). Rare. Aug.-Sept. 

 A. tenuifolius, L. (A. flexuosus, Nutt., Man). 



Borders of Mystic Pond, Medford (Rev. Thos. Morong; specimen 



in herb. of). Rare. 

 A. subulatus, Michx. (A. linifolius, Torr. & Gray, Man.) 



Common along salt marshes. Aug.-Sept. 

 A. linariifolius, L. (Diplopappus linariifolius, Hook., Man.) 



Common. A form with white flowers not uncommon. Aug.-Sept. 

 A. umbellatus, Mill. (Diplopappus umbellatus, Torr. & Gray, 



Man.) 



Common. Aug.-Oct. 

 A. infirmus, Michx. (Diplopappus cornifolius, Torr. & Gray, 



Man.) 



Concord (F. S. Collins) ; Acton (Dr. C. W. Swan). Rare. Sept. 



ERIGERON, L. 



E. Canadensis, L. HORSEWEED. 

 Common. July-Oct. 



