16 FLORA OF VERMONT 



P. coMPRESSA, I;. English Blue-grass. Dry fields and woodlands ; com- 

 mon. 



P. debilis, Torr. Dry rocky woodlands ; frequent. 



P. flava, L. (P. serotina, IJhrh.) Fowl Meadow-grass. Wet soil; com- 

 mon. The form known in Europe as P. fertilis, Eeich. also occurs at 

 Burlington, Jones, probably introduced. 



P. laxa, Haenke. Summit of Mt. ■Mansfield, Robbing. 



P. nemoralis, L. Rocky woodlands and mountain cliffs ; occasional and 

 variable. A form, var. strictior, Gray, from the islands and lieadlands 

 of Lake Champlain is of erect habit, and approaches P. caesla, Snaith. 



P. pratensis, L. Kentucky Blue-grass. Pastures and fields ; common. 

 P. pratensis, L- var. angustifolia, Smith. Groton Pond, Bates ; bog, Lake Wil- 

 loughby, Jones. 



SPARTINA. 



S. cynosuroides, Willd. '' Bellows Falls," Carei/. Shoresof Lake Champlain 

 and tributaries ; frequent. 



SPOROBOLUS 



S. aspcr, Kunth. Thompson's Point, Prlngle. 



S. serotinus. Gray. Wet soil ; Ripton, Boijce ; Bakersfield, Prlngle ; Peach- 

 am, lUundiard; frequent in elevated bogs of Windham county, Grout. 



S. vaginaeflorus, Wood. Dry soil ; occasional and'variable. The commoner 

 forms represent >S'. neglect us, Nash. Plants found at Burlington, Jones, 

 correspond to »S'. minor, Vasey. Professor Scribner has examined these, 

 however, and decides that all are included in^Wood's species. 



TRISETUM 



T. subspicatum, Beauv. (T. subspicatum, Beauv. var. molle, Gray.) Dry 

 woods and ledges ; occasional. 



ZIZANL\ 



Z. aquatica, L. Marshy borders of Lake Champlain and its tributaries ; 



occasional. 



