34 Tennessee Flora, 



ALISMACE^ D. C. 



ALISMA L. 



Alisma Plantago-aquatica L. In shallow water. O. S. 

 June-September. 



ECHINODORUS Rich. Engelm. 



Echinodorus radicans Engelm. Swamps along Cumber- 

 land River. July. 



SAGITTARIA L. 



Sagittaria latifolia Willd. Broad-leaved arrow head. 

 Ponds and shallow waters. O. S. August-September. 



S. latifolia pubescens Michl. East Tennessee. 



S. latifolia angustifolia Engelm. Hollow Rock, West Ten- 

 nessee. 



S. graminea Michx. West Tennessee. 



VALISNERIACE.E Dumort. 



PHILOTRIA Raf. 



Philotria Canadensis (Michx.) Britton. Elodea Canaden- 

 sis Michx. (Anacharis Canadensis Planch.). Stagnant wa- 

 ters. O. S. May-August. 



GRAMINEyE Juss. 



MAYIDE^. 



ZEA L, 



Zea Mays L. Indian corn. Cultivated in many varieties, 

 it constitutes the most important field crop in the State. 

 Sometimes it is self-sown at the roadside, but it does not at- 

 tain any growth without cultivation. M. 



TRIPSACUM L. 



Tripsacum dactyloides L. Gama grass. In moist pastures 

 near Hickman. A large patch in the old graveyard in Nash- 

 ville. June-September. 



I 



ANDROPOGONACE^. 

 ERIANTHUS Michx, 



Erianthus alopecuroides (L.) Ell. Plum grass. Old fields, 

 Dickson County. Tullahoma. September, October. 



E. strictus Baldw. Tullahoma. Swamps near Jackson. 

 S. M. Bain. 



