64 Karl M. Wiegand and Arthur J. Eames 



1. G. melicaria (Michx.) Hub. (See Rhodora 14:186. 1912. G. elongata of 



Cayuga Fl. G. Torreyana of authors.) 



Deep mucky swamps or near-by ditches, in calcareous regions ; rare. July. 



Cayuta Lake, n. end; Caroline, swamp s. of depot and run n. of Bald Hill; swamp 

 n. e. of Slaterville; Freeville Bog; n. of Freeville? (D.) ; Chicago Springs; w. of 

 Lake Como? (Locke Pond, D.) 



Que. to Minn., s. to Pa. and Ky., and in the mts. to N. C. ; rare on the Coastal 

 Plain. 



2. G. canadensis (Michx.) Trin. Rattlesnake Grass. 



Boggy and mucky marshes and borders of swamps, usually in noncalcareous 

 places but at Spencer in the presence of lime ; scarce. July-Aug. 10. 



Spencer Lake ; Summit Marsh ; springy open run n. of Bald Hill, Caroline ; 

 springy pasture one-half mile n. of Caroline Center; McLean Bogs; shore of Phillips 

 Pond. 



Newf. to Minn., southw. to N. J. and e. Kans., including the Coastal Plain. Large 

 specimens are G. laxa Scribn., but they do not constitute a separate race. 



3. G. nervata (Willd.) Trin. Panic-grass. 



Swales, wet fields, and along streams, usually near the borders of woods, mostly 

 in muck and in neutral or somewhat calcareous soils ; very common. May 15-June. 



Newf. to B. C, southw. to Fla. and Mex., including the Atlantic Coastal Plain. 



In woodlands the panicles are often green and have smaller spikelets, which are 

 2-3 mm. long instead of 3-4 mm. long, and 3-4-flowered instead of 4-7-flowered. 

 This is var. parviflora Peck (Rept. N. Y. State Bot. 46: 53 [133]. 1893). 



3a. G. nervata (Willd.) Trin., var. stricta Scribn. 



Open marshy places, mostly calcareous ; apparently infrequent. 



Collected only in a pasture on South Hill and at Mud Pond, McLean Bogs, but 

 probably more common. 



Range not clear. 



The ecological and taxonomic value of these variations of G. nervata is not 

 apparent. The var. stricta Scribn. is here interpreted as a coarser plant rather than 

 a dwarf er plant. 



4. G. grandis Wats. (G. arundinacca of Cayuga Fl.) Reed Meadow Grass. 

 Meadows, ditches, and marshes, mostly in more or less calcareous or saline soils ; 



common, and generally distributed. June 15-July 15. 



E. Que. to Alaska, southw. to Pa., Colo., and Nev. ; less frequent along the 

 Atlantic coast. 



5. G. pallida (Torr.) Trin. (G. pallida, in part, of Cayuga Fl.) 



Shallow water of swamps and ditches, in acid, neutral, slightly calcareous, or 

 brackish regions ; rare. May-June. 



"Marsh near head of Cayuga L. by C. S. R. R. July 1, 1882" (D. in C. U. Herb.!); 

 near Black Lake, 1919 (A. J. E., K. M. IV., & L. F. Randolph). 



N. S. to Mich., southw. to Va. and Miss., including the Coastal Plain. 



Flowering earlier than the next following species, according to St. John. Measure- 

 ments for the spikelets, as given by St. John, do not hold well in this flora. 



6. G. Fernaldii (Hitchc.) St. John. (See Rhodora 19:75. 1917. G. pallida, in 



part, of Cayuga Fl.) 



Shallow water of bogs and boggy marshes, usually in calcareous regions; scarce. 

 July-Aug. 



Slaterville Swamp; n. of Caroline Center; marly marsh, e. end of Dryden Lake; 

 Beaver Brook; moor of Mud Pond, McLean Bogs. 



Newf. to Minn., southw. to Conn, and N. Y. ; at least occasional on the Coastal 

 Plain. 



