60 Karl M. Wiegand axd Arthur J. Eames 



/. Flowering glumes narrow, 2.5-3.2 (3.4) mm. wide, strongly pilose near 

 the margin, otherwise glabrous, the nerves weak ; empty glumes 

 glabrous, the nerves scabrous ; upper nodes usually exserted at matu- 

 rity; flange and pilose ring at orifice of sheath not apparent; nodes 

 usually hairy. 7. B. ciliatus 



c. Awns exceeding the body of the flowering glume ; lower empty glume 1 -nerved, 

 upper one 3-nerved ; annuals. 

 d. Awns 10-17 mm. long; flowering glume villous-strigose ; panicle 6-15 cm. 



long, rather dense. 8. B. tectorum 



d. Awns 20-30 mm. long ; flowering glume scabrous ; panicle 10-20 cm. long, 

 broad and loose. 9. B. sterilis 



a. Spikelets 2.5-3.5 cm. long ; flowering glumes 10-12 mm. long, elliptic-lanceolate, 

 thin, awnless or rarely with a very short awn ; tall and coarse grasses, with 

 an open 4-11-rayed panicle. 10. B. inermis 



1. B. secalinus L. Cheat. Chess. 



A weed on roadsides and in cultivated fields and waste places, in gravelly, rather 

 fertile, soils ; frequent and generally distributed. June 10-July 10. 

 Widely naturalized in temperate X. A. Native of Eurasia. 



2. B. brizaeformis Fisch. & Mey. 



A weed on roadsides near the city sewerage pumping station (C. T. Gregory), 

 where it has been observed for several seasons. June-July 10. 



Mass. to Mich., southw. to Del. and Ind. ; also, B. C. to Calif, and Colo. Adventive 

 from Eu. 



3. B. commutatus Schrad. (B. raccmosus of Cayuga Fl.) 



A weed on roadsides and in waste places, mostly in gravelly soils ; frequent. June. 



C. U. campus ; streets, vacant lots, and railroad yards, Ithaca ; near Coy Glen ; 

 near Taughannock Falls ; Union Springs. 



Widely distributed in N. A. Naturalized from Eu. 



A related plant, B. hordaceus L., is frequent in eastern N. A. but has not been 

 collected in the Cayuga Lake Basin. 



4. B. Kalmii Gray. 



Dry or damp woodlands and banks, also in meadows, mostly in calcareous soils ; 

 scarce. June 15-July. 



Larch Meadow; Six Mile Creek, above the Sulphur Spring (D.\), near Green 

 Tree Falls (£>.), and near Beech Woods; Fall Creek, n. of Beebe Lake and back 

 of Prudence Risley Hall; near Beaver Brook (D.) ; cliff talus s. of Willets. 



Que. (?) and w. N. E. to Minn., southw. to N. J., Pa., and Mo.; rare or absent 

 on the Coastal Plain. 



The swamp plants should be studied further, as their habitat is peculiar for this 

 species. 



5. B. purgans L. (B. ciliatus, in part, and var. purgans, of Cayuga Fl.) Brome- 



grass. 



Damp or rather dry rocky woodlands and cliffs, in fairly rich gravelly or stony, 

 usually calcareous, soils ; frequent. July-Aug. 15. 



Enfield Glen; Slaterville Swamp; Coy Glen; Six Mile Creek; Cascadilla woods; 

 Fall Creek; Shurger Glen; Salmon Creek; Taughannock Gorge; Paine Creek; Big 

 Gully ; woods, Junius marl ponds ; not collected in the McLean district. 



N. H. and e. Mass. to Wis., southw. to Fla. and La. (Tex.?) ; a few stations on 

 the Coastal Plain. 



The form with glabrous sheaths (forma laevivaginatus Wiegand) is frequent. 

 The form with glabrous flowering glumes (forma glabriflorus Wiegand) has been 

 found at the following stations: ravine opposite Beech Woods, Six Mile Creek, 1916 



