Addition* t<> tin- Flow of Washington. 19 



ios8<i. Carex grisea Wahlbg. var. angustifolia Boott. 

 The Zoological Park. 



1064. Carex Careyana Torr. 

 High Island. 



1065. Carex laxicultnis Schw. (C. retrocurva Dew.) 

 Woods near Great Falls, Md. 



1068. Carex laxiflora Lam. var. styloflexa Boott. 

 Terra Cotta swamp. 



*i072f. Carex laxiflora Lam. var. varians Bail. 



Bunker Hill; the Smithsonian Park; the Virginia shore near Aqueduct 

 bridge. 



1075. Carex umbellata Schk. 



Exceedingly common on the sand hills around Terra Cotta and Fort 

 Totten; Sandy Landing. 



1077. Carex nigro-marginata Schw. 



Grassy banks along Rappley road near Sligo; Bunker Hill; on rocks 

 at Great Falls near the canal. 

 1 08 1. Carex prasina Vahl. 



Forest Glen. 

 *iop2a. Carex typhinoides Schwein. 



Low thickets near Hyattsville. 

 HOI. Vilfa aspera Beauv. 



Rocks at Great Falls, Md. 

 noia. Vilfa vaginaeflora Vasey. 



Common in the city, in lawns, vacant lots, etc.; along roads near 

 Hyattsville, Highlands, Great Falls, etc. 

 no4. Agrostis elata Trin. 



Evidently common in woods, and has been found in many localities 

 besides those already recorded: near Chevy Chase; Cabin John; Great 

 Falls, Md., etc. 

 1 1 1 2. Muhlenbergia capil laris Kth. 



Very abundant forming large patches on the rocks at Great Falls, Md, 

 October, 1899. 

 1119. Aristida purpurascens Poir. 



On dry rocks at Great Falls, Md.; near Hyattsville. 

 *ii24. Tricuspis seslerioides Torr. var. pallida Holm, n. var. 



A form with pale green spikelets; with the type near Marshall Hall, 

 ii25. Eaton ia obtusata Gr. 



Low grounds near the Reform School. 

 ii2(>'/. Eatonia Dudleyi Vasey. 



In woods at Scott's run, Va. ; Sandy Landing. 

 1129. Olyceria laxa Scribner. 



Still abundant in the Terra Cotta swamp (Aug., 1900). 



