614 REPORT OF STATE GEOLOGIST. 



EQUISETACE.E. Horsetail Family. 



EQUISETUM. 



E. arvense L. Field Horsetail. 



Occurs commonly, throughout the State on moist, sandy or 

 gravelly banks. 



Vigo (Blatchley); Hamilton and Marion (Wilson); Steuben 

 (Bradner); Gibson. 



E. fluviatile L. Swamp Horsetail. 



Occurs on the margins of ponds or in shallow water. 

 Vigo (Blatchley); Lake (Hill). 



E. robustum A. Br. Stout Scouring-rush. 



Occurs in counties along the Ohio river. 



E. hyemale L. Common Scouring-rush. 



Occurs in wet soil, along railways, rivers, and old canals. 

 Vigo (Blatchley); Hamilton (Wilson); Steuben (Bradner). 



E. laevigatum A. Br. Smooth Scouring-rush. 



Along streams and rivers, especially in clay soils. 

 Lake (Hill). 



E. VARrEGATUM Schleich. Variegated Equisetum. 



This species has been reported from Lake County by Rev. E.J. Hill. 



LYCOPODIACE^E. Club-moss Family. 



LYCOPODIUM L. 



L. lucidulum Michx. Shining Club-moss. 

 Occurs in cold, damp woods. 

 Putnam (Underwood); Steuben (Bradner). 



L. intjndatum L. Bog Club-moss. 



Occurs in sandy bogs in northern counties. 

 Steuben (Bradner); Lake (Hill). 



L. obscurum L. Ground Pine. 

 In moist woods. 

 Lake and Montgomery. 



