Recently Introduced Grasses and Sedges 1 



By Arthur Hollick 



In the vicinity of Arlington Station, at the end of the S. I. R. 

 T. Railroad is an extensive area of filled in ground, formed by 

 the dumping of garbage, ballast, and car sweepings over the 

 surface of the salt meadows. In the ground thus formed a large 

 number of introduced plants have gained a foothold. Many 

 have become permanent residents of our island but others will 

 doubtless not exist through the coming winter. 



Of special interest are a number of grasses and sedges, most 

 of which are apparently thoroughly established there and are 

 rapidly spreading. In the following list those species marked 

 with an asterisk (*) have not heretofore been recorded from the 

 island : 



Zea mays L. Indian corn. 



A vena sativa L. Oats. 



*Sorghum halepense Pers. Johnson grass. 



Phalaris canariensis L. Canary grass. 



Panicum miliaceum L. Millet. 



Ixophorus italicus (L.) Nash. Italian millet. 



*Capriola dactylon (L.) Kuntze. Bermuda grass. 



Eleusine indie a (L.) Gaertn. Yard grass. 



*Eragrostis major Host. 



*Cyperus compressus L. 



*Cy perus rotundus L. 

 The latter two species are natives of the Old World and, so far 

 as I am aware, have not heretofore been definitely recorded in the 

 United States north of Virginia, although they occur southward 

 to the Gulf of Mexico. 

 1 Presented March 20, 1909. 



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