68 Karl M. Wiegand and Arthur J. Eames 



Some dry-ground stations are: high banks near Ithaca Falls (D.) ; Cascadilla 

 woods (D.) ; high hills in Danby and elsewhere (£>.). 



Newf. to B. C, southw. to N. J., Pa., Iowa, and Colo., including the northern 

 Atlantic Coastal Plain. Found also in Eurasia. 



7. Eragrostis Beauv. 

 a. Culms extensively creeping, forming mats; leaves 1.5-4 cm. long. 



1. E. hypnoides 

 a. Culms erect or ascending ; leaves, or some of them, more than 4 cm. long. 

 b. Spikelets 2-4-flowered, about 2 mm. long. 

 c. Panicle 15—40 cm. long, more than half the height of the plant; pedicels mostly 



7^\0 mm. long. 2. E. capillaris 



c. Panicle 5-12 cm. long, usually less than half the height of the plant; pedicels 

 2-6 mm. long. 3. E. Frankii 



b. Spikelets 5-many-flowered, 3 mm. long or more; panicle usually less than half 

 the height of the plant. 

 c. Spikelets 0.8-1.5 mm. wide. 



d. Pilose hairs at summit of sheaths present ; panicle branches spikelet-bearing 



only on the upper two-thirds. 4. E. pilosa 



d. Pilose hairs at summit of sheaths wanting; panicle branches spikelet-bear- 

 ing to near the base. 5. E. peregrina 

 c. Spikelets 1.8-3 mm. wide. 



d. Flowering glumes densely imbricated, 2-2.2 mm. long; joints of the rhachilla 

 not visible ; spikelets 2.9 mm. wide. 6. E. cilianensis 



d. Flowering glumes loosely imbricated, 1.8 mm. long; joints of the rhachilla 

 visible ; spikelets 2 mm. wide. 7. E. minor 



1. E. hypnoides (Lam.) BSP. (E. rcptans of Cayuga Fl.) 



Damp sandy or silty flats and shores, apparently not in acid soils ; frequent. July- 

 Sept. 



Chiefly in or near Cayuga Lake Valley ; Enfield Glen ; Fall Creek, above and 

 below Forest Home ; Inlet Marshes ; along the lake shore from Salmon Creek to the 

 Canoga and Montezuma Marshes ; region of Cortland marl ponds. 



Vt. and Ont. to Wash., southw. to Fla. and Mex. 



2. E. capillaris (L.) Nees. 



Dry or damp gravelly banks or stream bars, in calcareous soils ; rare. Aug- 

 Sept. 



Enfield Glen; near Fall Creek Mills (D.) ; n. of the "Nook" (D.) ; mouth of 

 Salmon Creek ravine (D.) ; Utt Point (D.). 



N. H. to Kans., southw. to Ga. and Tex. ; infrequent on the Coastal Plain. 



3. E. Frankii (Fisch., Mey. & Lall.) Steud. 

 Fields and waste places; rare. Aug. 15-Sept. 



Common in a cultivated field, Agricultural College farm e. of East Lawn Ceme- 

 tery, 1919 (A. J. E. & L. F. Randolph) ; gravel bar, mouth of Big Gully Brook, 

 1918, probably this species. 



Mass. to Minn, and Kans., southw. to Miss, and La. Introduced in the Cayuga 

 Lake Basin. 



House (Bui. N. Y. State Mus. 254: 111) cites "Ithaca, IV. R. Dudley," but this 

 species is not listed in Dudley's Cayuga Flora and there is no specimen collected by 

 him in the C. U. Herb. 



4. E. pilosa (L.) Beauv. 



A weed on dry sandy or gravelly roadsides, in waste places, and in railway cinders ; 

 common, and generally distributed. July-Sept. 



