108 SANDUSKY FLORA. 



EUPHORBIA, L. Spurge. 



E. commutata, Engelm. 



Marblehead, Johnson's Island, Cedar Point, 

 Willow Point; rare except near the railroad on 

 Marblehead. 



E. COROLLATA, L. 



Frequent. 

 E. cyparissias, L. Cypress Spurge. 



Spreading in and from cemeteries and yards. 

 Islands. 



E. DENTATA, Michx.* 



Islands, Peninsula and mainland near Sandusky 

 Bay; frequent. 

 E. hirsuta, Wiegand.* 



Common, but not on the Islands. 



E. MACULATA, L. 



Abundant. 



E. MARGINATA, Pursh. 



Naturalized in flower gardens, frequent; else- 

 where rare. 

 E. peplus, L.* 



Along fence, Jefferson St., near Fulton St., San- 

 dusky, where it has been for a number of years. 



E. POLYGONIFOLIA, L. 



Abundant on sandy shores of Lake Erie. Islands. 



E. preslii, Guss. 

 Common. 



E. serpens, HBK.* 



Johnson's Island ; rare. A lot in Sandusky, va- 

 cant in 1896, but since used for a building site. 



CALLITRICHACE^E. 



CALLITRICHE, L. Water Starwort. 



C. HETEROPHYLLA, Pursh. 



Berlin ; rare. 



