Wool-waste grasses at Yonkers 

 H. A. Gleason 



On July 18 and September 24, 1898, Mr. George V. Nash 

 made small collections of grasses from the vicinity of a woolen 

 mill in Yonkers. These specimens were recently turned up 

 among some old papers at the New York Botanical Garden and 

 sent to Washington for identification by Mr. J. R. Swallen. 



Tw^enty-three species are included in the collection, of w^hich 

 nine are listed by Taylor in his Flora of New York. Dactyloc- 

 tenium aegyptium (L.) Richt. and Cynodon Dactylon (L.) Pers. 

 are noted by Taylor as rare weeds in our vicinity; Eragrostis 

 poaeoides (L.) Beauv. as a rare and local weed; Hordeitm miiri- 

 num L. as rare as a ballast weed; Sporobolus cryptandrus (Torr.) 

 Gray as known only from Fairfield County, Conn., perhaps 

 introduced; Heleochloa schoenoides (L.) Host as not very com- 

 mon as a weed. The other three are common weedy grasses. 



Two species, Bromiis japonicus Thunb. and Hordeum vul- 

 gare L., are not listed by Taylor, but are frequent over wade 

 ranges of territory. 



Four are native American species with ranges extending from 

 our plains states south to Texas: Chloris virgata Sw., Sporobolus 

 airoides (Torr.) Torr., Sporobolus argutus (Nees) Kunth, and 

 Aristida adscencionis L. Five have ranges extending from Texas 

 to Arizona and southward into or through Mexico: Chloris 

 ciliata Sw^, Trichloris mendocina (Phil.) Kurtz, Pappophorum 

 bicolor Fourn., Pappophorum mucronulatum Nees, and Tragus 

 Berteronianus Schult. The overlapping of these nine species in 

 Texas suggests very strongly that the wool in which seeds were 

 carried was imported from that part of the country. 



There still remain two species not listed in Hitchcock's 

 recent Manual of the Grasses, Pennisetum ciliare (L.) Link and 

 Andropogon Ischaemum L., and one other, Cenchrus barbatus 

 Schum., reported by Hitchcock only on ballast at Mobile. 



New York Botanical Garden 

 New York, N. Y. 



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