48 MICHIGAN ACADEMY OF SCIENCE. 



KORYCARPUS Zea. DIARRHENA Raf. 



*287. K. diandrus (Michx.) Kuntze. Diarrhena American Beauv. S. Mich., 

 Wright Cat.; Flint; Hubbardston. Reaches its northern limits in Ionia Co. Rare. 



BRIZA L. 



288. B. media L. Quaking Grass. Bay City, G. M. Bradford, C. A. Davis. 



CYNOSURUS L. 



289. Cynosurus cristatus L. Dog's-tail Grass. Scarce. 



DACTYLIS L. 



*290. D. glomerata L. Cock's Foot. Orchard Grass. Escaped from cultivation 

 and becoming frequent. 



POA L. 



291. P. alpina L. Alpine Spear-grass. U. P. Isle Royale, C. G. Loring, Jr., in 

 Gray's Manual; Keweenaw Co., O. A. Farwell. U. P. 



*292. P. alsodes A. Gray. Grove Meadow-grass. Banks of brooks, flowering 

 early. Flint; Hubbardston; Inland, Grand Traverse Co. Infrequent. L. P. 

 *293. P. annua L. Low Spear-grass. Low grounds. Common. Th. 



294. P. autumnalis Muhl. Flexuous Spear-grass. P. flexuosa Muhl. Swamps. 

 Hubbardston; Constantine, C. F. Wheeler; Flint, Dr. Clark; Rochester, 0. A. 

 Farwell. 



*295. P. compressa L. Wire-grass. Blue Grass (of N. Eng. and N. Y.). Dry 

 fields. Common. Th. 



*296. P. debilis Torr. Weak Spear-grass. Hillsides. S. Mich., Winch. Cat.; 

 Macomb Co.; Hubbardston to N. Shore of Lake Superior, Macoun. Infrequent. Th. 

 *297. P. flava L. Fowl Meadow-grass. P. serotina Ehrh. Wet meadows, where 

 it is a valuable grass, sometimes mistaken for Red-top, Agrostis aba. Th. 



298. P. glauca Vahl. Glaucous Spear-grass. Near Grayling; Isle Royale; Ke- 

 weenaw Co., O. A. Farwell. 



300. P. nemoralis L. Wood Meadow-grass. P. caesia strictoir A. Gray. Through- 

 out N. Mich. Infrequent except in the north. 



*301. P. pratensis L. Kentucky Blue Grass. June Grass. Pastures and meadows. 



302. P. sylvestris A. Gray. Sylvan Spear-grass. Low woods. S. Mich., Winch. 

 Cat; Flint; Hubbardston. Rare. C. & S. 



303. P. trivialis L. Roughish Meadow-Grass. S. Mich., Wright Cat.; Flint. 

 Sparingly in cultivation. 



GRAPHEPHORUM Desv. 



*304. G. melicoideum (Michx.) Beauv. River banks. Macomb Co.; Flint; Hub- 

 bardston; Petoskey; Grand Detour, Upper Michigan, Prof. Porter. Rare South, 

 abundant at Pic River, Macoun. Th. 



305. G. melicoides major A. Gray. Swamps. Hubbardston; Washington, Ma- 

 comb Co. 



PANICULARIA Fabr. GLYCERIA R. Br. 



*306. P. Americana (Torr.) MacM. Tall Manna-grass. Glyceria grandis S. 

 Wats. Common. Th. 



*307. P. Canadensis (Michx.) Kuntze. Rattlesnake-grass. Glyceria Canadensis 

 Trin. Borders of marshes. S. W., Winch. Cat.; Flint; Ionia Co. Infrequent. Th. 



*308. P. fluitans (L.) Kuntze. Floating Manna-grass. Glyceria fluitans R. Br. 

 Shallow water. Common. Th. 



308a. P. laxa Scribn. Northern Manna-grass. Muskegon, W. J. B.; Keweenaw 

 Co., 0. A. Farwell. 



*309. P. nervata (Willd.) Kuntze. Nerved Manna-grass. Glyceria nervata Trin. 

 Very variable. Woods and wet meadows. Th. 



*310. P. pallida (Torr.) Kuntze. Pale Manna-grass. Glyceria pallida Trin. 

 Constantine, Wheeler; Keweenaw Co., O. A. Farwell; Manistee and Sturgis, F. P. 

 Daniels. Wet places. Rare. S. 



