PLANTS OF IOWA 137 



1713. P. debilis, Torr. "Weak Spear- grass. 

 In woods ; rare. 



1714. P. sulvestris, A. Gray. Sylvan Spear-grass. 

 In woods, frequent. 



1715. P. wolfii, Scribn. Wolf's Spear-grass. 

 Eock woods, infrequent. 



1716. P. compressa, L. Wire-grass. 

 Introduced from Europe; common. 



1717. P. arachnifera, Torr. Texas Blue-grass. 

 Infrequent. 



SCOLOCHLOA, Link. 



1718. S. festucacea, (Willd.) Link. Fescue Scolochloa. 

 Wet ground, not common. 



PANICULARIA, Fabr. 



1719. P. nervata, (Willd.) Kuntze Nerved Manna-grass. 

 Common in moist meadows. 



1720. P. americana, (Torr.) MacM. Reed Meadow-grass. 

 Common on moist ground in the central and northern 



part of the state. 



1721. P. fluitans, (L.) Kuntze. Floating Manna-grass. 

 Shallow water, common. 



1722. P. borealis, Nash. Slender Manna-grass. 

 Not common. 



FESTUCA, L. 



1723. F. octoflora, Walt. Slender Fescue-grass. 

 Common in sandy soil. 



1724. F. rubra, L. Red Fescue-grass. 

 Not common. 



1725. F. ovina, L. Sheep's Fescue-grass. 

 Escaped from cultivation ; not common. 



1726. F. elatior, L. Tall Fescue-grass. 

 In fields and waste places. 



,1727. F. shortii, Kunth. Short's Fescue-grass. 



Open wood ; common. 

 1728. F. nutans, Willd. Nodding Fescue-grass. 



Rocky wood ; common. 



