Additions to the Flora of Washington. 41 



*1078. Carex communis Bailey. 



This species has undoubtedly been observed before in the District, but 

 confounded with C. Pennsylvanica Lam. It is closely related to this last, 

 from which it differs, however, by its cespitose growth without stolons. 

 The scales of the staminate and fertile inflorescences are usually purplish, 

 but lighter than those of C. Pennsylvamca. It is very common on the rocks 

 of the Potomac shore, Virginia. The author. 

 *1078/>. Carex communis Bailey, var. Wheeleri Bailey. 



With the preceding. The author. 



1080. Carex pubescens Muhl. 



Cabin John Run ; the Zoological Park. The author. 



1081. Carex prasina Vahl. (C. miliacea Muhl.). 



Woodley Park ; the Potomac shore, three miles above Aqueduct Bridge, 

 Va. The author. 



1090. Carex lupulina Muhl. 



Near Rosslyn, Va. ; Potomac flats. G. H. Hicks. The Zoological Park. 

 William Hunter. 



1091. Carex folliculata L. 



Takoma. T. H. Kearney, Jr. Magnolia Run, Rock Creek Park ; 

 abundant in the woods along Walker road, between Camp Spring P. O. 

 and Surattsville. The author. 



1092. Carex squarrosa L. 



Near Chevy Chase circle. G. H. Hicks. Garrett Park. The author. 



1093. Carex stenolepis Torr. 

 Common in South Brookland. The author. 



1101. Sporobolus asper Beauv. 



High Island. L. H. Dewey. 

 llOla. Sporobolus vaginaeflorus Torr. 



Common in low grounds, Brookland ; the lawns in the Smithsonian 

 Park, and around the Catholic University. The author. 

 *1104a. Agrostis elata Trin. 



Common in pine woods, Brookland ; also in the deciduous forests along 

 Walker road, near Silver Hill, Surattsville, etc. The author. 

 1107. Muhlenbergia sobolifera Trin. 



Woods in North Brookland , but very scarce. The author. 

 1114. Calamagrostis Nuttalliana Steud. 



Takoma. F. L. Scribner, T. H. Kearney, Jr., and L. H. Dewey. 

 1119. Aristida purpurascens Poir. 



Along the roads ; very common near Allentown and Surattsville. 

 1125a. Eatonia obtusata Gr. 



Dry fields, North Brookland. The author. 

 *1126a. Eatonia Dudleyi Vasey. 



Brookland. Terra Cotta. The author. Rock Creek. L. H. Dewey. 



This species is recorded in Professor Ward's Flora of the District as a 

 slender wood form of E. Pennsylvanica Gr. 



