636 REPORT OF STATE GEOLOGIST. 



SPOROBOLUS K. Br. 



S. asper (Michx.) Kunth. Rough Rush-grass. 



Found in the southwestern part of the State, where it is common 

 in dry, sandy fields. The plant is too rough and coarse to have any 

 value as a forage plant. 



Flowers in August and September. 



Vigo (Blatchley) ; Gibson and adjoining counties. 



S. vagina florus (Torr.) Wood. Sheathed Rush-grass. 



Common in the counties along the Ohio river, in dry, sandy soil. 

 Flowers in August and September. 

 Jefferson (Barnes). 



S. cryptandrus (Torr.) Gray. Sand Dropseed. 



Found in many parts of the State, growing in sandy soil in open 

 places. A favorite forage plant with cattle and sheep. 

 Flowers in August and September. 

 Lake (Hill). 



S. heterolepis Gray. Northern Dropseed. 



It is found in the southwestern counties, growing in dry soil. " It 

 makes fair hay but is not very productive." (Troop.) 

 Flowers in August. 

 Gibson and adjoining counties (Troop); Lake (Hill). 



CLNNA L. . 



C. arundinacea L. Wood Reed-grass. 



A coarse grass growing in wet woods and marshes. Common 

 and abundant throughout the State. The large leaves furnish a 

 considerable quantity of very coarse, inferior fodder. 



Flowers in July and August. 



Tippecanoe (King) ; Fayette (Hessler) ; Vigo (Blatchley ) ; Ham- 

 ilton and Marion (Wilson) ; Jefferson and Gibson. 



AGROSTIS L. 



A. alba L. Red- top. Herd's-grass. 



(Includes A. alba vulgaris Thurb.) 

 An extremely variable form found in all parts of the State in 

 moist, rich soils. It is largely cultivated for hay, and is also used 



