8 C. K. DODGK 



Calamagrostis inexpansa Gray 

 Bog Reed-grass 



It is to be inferred that both Gray and Britton and Brown incUide Michi- 

 gan in the range of this grass, although the state is not specifically men- 

 tioned. The Michigan Flora states in its additions that Dr. H. S. Pepoon 

 saw it near Keeler, Van Buren County. 



For over five years it has persisted in open wet ground along the Grand 

 Trunk Railway near the city of Port Huron. It has perhaps been introduced 

 at this point. 



Danthonia compressa Aust. 



Flattened Wild Oat-grass 



This species is new to Michigan flora. The habitat and range are given 

 by Gray as "Dry woods, Me. to N. Y. and southw.", and in Britton and 

 Brown as "In woods, Maine to New York, south to North Carolina and 

 Tenessee." The writer found it plentiful in several dry, open or partially 

 shaded places in the northeastern part of Schoolcraft County in 1916. 



Spartina patens (Ait.) Muhl. 

 Salt-Meadow Grass 



The habitat of this grass is "salt meadows and sandy beaches" along the 

 Atlantic coast. It grows in salty ground, and with "Jiiiicus Gcrardi, the 

 'black grass,' furnishes most of the salt meadow hay of the Atlantic coast." 

 Both manuals substantially agree as to its habitat and range. It is not in- 

 cluded in the Michigan Flora. 



The species has become established and has persisted for over ten years 

 in the Grand Trunk Railway freight yards above the Tunnel Station near 

 the city of Port Huron. One mound in particular, about thirty feet long 

 and fifteen feet wide, is snugly sodded over with salt-meadow grass to the 

 exclusion of almost every other plant. A few rods distant Juncns Gcrardi is 

 very abtmdant. Appropriate soil conditions are furnished by salt water 

 from a large ice house and many salt vats where refrigerator cars are iced 

 before going farther east. The salt used with the ice is often scattered about 

 in substantial quantities. 



Glyceria borealis (Nash) Batchelder 

 Northern-manna Grass 



Michigan is apparently included in the range of this plant by Gray and 

 Britton and Brown, although the state is not specifically mentioned. In the 

 latter it bears the scientific name Paniciilaria borealis Nash, and the same 

 common name as P. la.va Scribn, a grass whose range appears to be farther 

 east. It is not listed in the Michigan Flora. It has been observed by the 

 writer as plentiful in damp open ground near Fostoria, Tuscola County. 

 1910, and near L'Anse, Baraga County, 1916. 



