47 



Phaseolus diversifolius, Pers. 

 Near the coast. Not rare. A form with mostly undivided leaves 

 and bearing tubers on the stem just below the ground ; grows on 

 Deer Island, in the Merrimac, at Newburyport. 



Amphicarpsea monoica, Ml. (Hog Pbastjt.) 

 Woodlands. Common. 



Baptisia tinctoria, B. Br. (Wild Indigo.) 

 Common in dry soil. 



Cassia Marilandica, L. (Wild Senna.) 

 "Near Salem " (Buttrick's list Proc. E. I., Vol. 11, p. 24) ; Andover 

 (G. D. Phippen); Georgetown (Mrs. Homer). Scarce. 



Cassia nictitans, L. (Wild Sensitive-Plant.) 

 Lawrence ; Groveland (Kev. J. L. Russell) ; Beer Island, Newbury- 

 port; and a few other localities. Scarce. 



Gleditschia triacanthos, L. (Three-thorned Acacia; Honey 

 Locust.) 

 Introduced from Pennsylvania, etc., frequently spreading by seeds. 



BOSACEJS. 



(Rose Familt.) 



Primus Americana, Marshall. (Wild Yellow or Red Plum.) 

 Represented in the P. A. S. county herbarium by a specimen col- 

 lected by the late Mr. Oakes, the precise locality being unknown. 



Prunus maritima, Wang. (Beach Plum.) 

 Near the coast. Common at Ipswich, Plum Island, etc. Found 

 also in the interior along walls where the stones, thrown by farmers 

 on their way home from haying on the marshes, have sprung up. 



Pnmus piimila, L. (Dwarf Cherrt.) 

 "Outlet of mineral spring pond" (memo. Dr. Chas. Pickering); 

 "Andover, June, 1873" (memo. Rev. H. P. Nichols). Not repre- 

 sented in the county collection at the P. A. S. 



Prunus Pennsylvanica, L. (Wild Red Cherrt.) 

 Not uncommon in most parts of the county. 



Prunus Virginiaua, L. (Choke Cherry.) 

 Very common near walls. 



Prunus serotina, Ehrhart. (Wild Black Cherry.) 

 Common. Often attaining large size. Considered by the late Dr. 

 Chas. Pickering to have been introduced into the county by the 

 early settlers, from other parts of New England. 



