The Flora of the Cayuga Lake Basin 77 



Dry Run, Spencer ; hill woods, Buttermilk Glen ; upper Coy Glen ; Cascadilla 

 woods; Fall Creek; e. of the Ithaca golf grounds, Cayuga Heights; s. w. corner of 

 Cayuga Lake ; Dryden Lake ; Chicago Bog ; sandy woods e. of Junius marl ponds ; 

 and elsewhere. 



N. S. to Minn., southw. to N. J., Tenn., and Mo., including the northern Coastal 

 Plain. 



A complete series of transitional forms may easily be found between the coarser 

 forms with straighter branches and more appressed spikelets, and the shade form with 

 very divaricate zigzag capillary branches and scattered spikelets (A. Schweinitzii 

 Trin.). 



4. A. hyemalis (Walt.) BSP. (A. scabra of Cayuga Fl.) Hair Grass. 



Dry or damp, sandy or gravelly, leached-out or acid, soils, in open fields, in borders 

 of woods, and even in peat bogs ; frequent. July. 



Characteristic of sterile hillsides, exsiccated places, and old logs in swampy 

 marshes ; found mostly in the hills w., s., and e. of Ithaca, and in the McLean region ; 

 rare on the richer soil back from the shore of Cayuga Lake. 



Nearly throughout N. A., except in the extreme North. 



24. Cinna L. 

 a. Spikelets 5 mm. long; panicle dense; leaves large, 2-3 dm. long, (5) 8-20 mm. 



wide. 1. C. arnndinacea 



a. Spikelets 3-4 mm. long; panicle loose; leaves smaller, 1.5-2.5 dm. long, 5-10 (11.5) 



mm. wide. 2. C. latifolia 



1. C. arundinacea L. 



Swampy woodlands, in soils not strongly calcareous ; frequent. Aug. 

 Cayuga Lake; Renwick woods (D. !) ; Fall Creek Gorge; swamps of Freeville 

 and elsewhere (D.\) ; Spring Lake. 



N. S. to Ont, soutbw. to Ga. and Tex., including the Coastal Plain. 



2. C. latifolia (Trev.) Griseb. (C. pendula of Cayuga Fl.) 



Shaded wet ravine banks and deep swamps, in calcareous regions ; infrequent. 

 July 15-Aug. 



Michigan Hollow Swamp, delicate form (D.) ; Enfield Glen; Fall Creek Gorge 

 (D.) ; Malloryville Bog; McLean Woods; Beaver Brook (D. !) ; Lake Como (Locke 

 Pond, D.) ; Westbury Bog. 



Lab. to Alaska, southw. to N. E., n. N. J., N. Y., the Great Lakes region, Colo., 

 Utah, and Oreg., and in the mts. to N. C. ; apparently absent on the Atlantic Coastal 

 Plain. Found also in Eu. 



25. Sporobolus R. Br. 

 1. S. neglectus Nash. (S. vaginaeflorns of Cayuga Fl.) 



Roadsides and waste places, in sandy or gravelly sterile, mostly neutral, soils ; be- 

 coming frequent. Sept. 



Field, upper Coy Glen; Willow Ave., Ithaca; near Triphammer Falls (DA); 

 near Fall Creek Mills (D.) ; near Hanshaw Corners; "abundant on the lakeshore 

 banks, near Ludlowville, Aurora, Sheldrake, etc." (D.) ; around the sulphur spring 

 s. of Big Gully Point ; and elsewhere. 



N. B. to N. Dak., southw. to Va. and Tex. ; rare or absent on the Coastal Plain. 



S. vaginiflorus (Torr.) Wood is a plant of more acid soils, chiefly along the 

 Atlantic coast and about the Great Lakes. 



26. Alopecurus L. 



a. Spikelets 5 mm. long ; empty glumes acute ; awn exserted about 5 mm. 



1. A. pratensis 

 a. Spikelets 2-2.2 mm. long ; empty glumes obtuse ; awn very short, slightly exserted 

 or included. 2. A. aequalis 



