PLANTS OF IOWA 135 



PHRAGMITES, Trin. 



1684. P. phragmites, (L.) Karst. Reed. 

 Borders of ponds, infrequent. 



TRICUSPIS, Beauv. 



1685. T. seslerioides, (Michx.) Torr. Tall Red-top. 

 On gravelly soil. 



TRIPLASIS, Beauv. 



1686. T. purpurca, (Walt.) Chapm. Sand-grass. 

 Dry sand; frequent. 



DIPLACHNE, Beauv. 



1687. D. fascicularis, (Lam.) Beauv. Salt Meadow Dip- 



lachne. 



Rare, southeastward. 

 ERAGROSTIS, Beauv. 



1688. E. capillaris. (L.) Nees. Capillary Eragrostis. 

 On sandstones, infrequent. 



1689. E. frankii, Steud. Frank's Eragrostis. 

 Common on banks of streams, and in woods. 



1690. E. purshii, Shrad. Pursh's Eragrostis. 

 Common. 



1691. E. eragrostis. (L.) Karst. Low Eragrostis. 

 Introduced from Europe, not common. 



1692. E. major, Host. Strong-scented Eragrostis. 

 An introduced weed; common. 



1693. E. pectinacea, (Michx.) Steud. Purple Eragrostis. 

 In sandy soil, not common. 



1694. E. trickodes, (Nutt.) Nash. Hair-like Eragrostis. 

 Sandy soil ; rare. 



1695. E. liypnoides, (Lam.) B. S. P. Creeping Eragrostis. 

 EATONIA, Raf . 



1696. E. obtusata, (Michx.) A. Gray. Blunt-scaled Eatonia. 

 Common on dry soil. 



1697. E. pennsylvanica, (DC.) A. Gray. Pennsylvania Eato- 



nia. 

 Common in moist meadows. 



1698. E. pennsylvanica, var. major, Torr. 

 With type, less common. 



