128 



Agrostideae 



Agrostis 



" 50 



Map 210 



Agrostis hyemalis (Walt.) BSP. 



difficulty and the task is complicated by the addition of the many cultivated 

 forms. 



Nat. of Eurasia ; in all the cooler parts of the U. S. 



2. Agrostis palustris Huds. (Agrostis alba var. maritima (Lam.) 

 G. F. W. Mey., Agrostis maritima Lam., and Agrostis stolonifera var. 

 compacta Hartman of Deam, Grasses of Ind.) Creeping Bent. Map 207. 

 The few specimens of this species I have seen were found on the low borders 

 of streams, usually with a part of the colony in the running water. 



Nat. of Eurasia; introduced in the northern part of the U. S., and 

 occasionally as far south as Tex. and N. Mex. 



3. Agrostis Elliottiana Schultes. Elliott Bentgrass. Map 208. Fre- 

 quent to common throughout the area shown on the map in hard, 

 white clay soils with a pH value ranging from 6-6.6. The mass distribution 

 occurs in moist fallow fields and pastures. It is also found on washed slopes 

 and on crests of ridges in open woodland. The species is usually associated 

 with Agrostis hyemalis from which it is easily separated by its scabrous 

 feel, smaller size, and awned lemmas. 



Md. to 111., Mo., and Kans., southw. to Ga., Ala., and e. Tex.; Yucatan. 



4. Agrostis scabra Willd. (Agrostis hyemalis of recent authors, in 

 part.) (Rhodora 35: 207-209. 1933.) Northern Ticklegrass. Map 209. 

 In low sandy and mucky soils in the northern counties. This species very 

 much resembles the next one but it is separated from it by its larger size, 

 its broader and flat cauline leaves, larger panicle, longer-pedicelled spike- 

 lets, longer spikelets, longer anthers, its later flowering season, and its 

 northern range. This species flowers, on the whole, at least a half month 

 later than the next one. 



Lab. and Newf. to Alaska, southw. to Pa., Ind., Iowa, Nebr., N. Mex., 

 Ariz., and Calif. 



