112 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



71. Carex laxiculmis Schwein. 



Wooded slopes of the Piedmont Region. May-June. Me. to Mo. and Va. (C. 

 retrocurva Dewey.) 



72. Carex albursina Sheldon. 



Woods; Plummers Island and High Island. May. Northeastern U. S. (C. 

 laxijiora latifolia Boott.) 



73. Carex styloflexa Buckl. 



Wet 'woods; Eastern Branch; Bennings; Beltsville. May. Eastern U. S. (C. 

 laxijiora styloflexa Boott.) 



74. Carex blanda Dewey. 



Woods and meadows. May. Northeastern U. S. (C. laxifiora blanda Boott; C. 

 laxiflora varians Bailey.) 



75. Carex laxiflora Lam. 



Woods and meadows. May. Eastern U. S. (Including C laxiflora gracillima 

 Boott and C. laxiflora intermedia Bailey.) 



76. Carex anceps Muhl. 



Woods and meadows; apparently common. May. Eastern U. S., south to N. C. 

 (C laxiflora patulifolia Carey; C. laxiflora plantaginea of Ward's Flora.) 



77. Carex striatula Michx. 



Woods and meadows. May, Southeastern U. S., north to N. J. (C. laxiflora 

 divaricata Bailey.) 



78. Carex granularis Muhl. 



Moist woods. May-June. Eastern U. S. 



79. Carex oederi Retz. 



But once collected, "Washington, D. C, Aug. 9, 1879, Ward;" the one rather poor 

 specimen seems to be near the var, pumila Femald. Northern U. S. (Possibly C. 

 flava of Brereton's Prodromus.) 



80. Carex lacustris Willd. 



Swamps and marshes of the Coastal Plain. May-July. Northeastern U. S., south 

 to D. C. (C. riparia of Ward's Flora.) 



81. Carex lanuginosa Michx. 



Swampy places along the Potomac. May-June. Northern states, south to D. C. 



82. Carex vestita Willd. 



Sandy soil, throughout; not common. May- June. Northern states, south to Ga. 



83. Carex comosa Boott. 



Swamps and edges of pools. June-July. Nearly throughout the U. S. (C. pseudo- 

 cyperus of Ward's Flora.) 



84. Carex hystericina Muhl. 



Swales and wet places; First Lock; flats below Chain Bridge. May- June. Widely 

 distributed in the U. S. 



85. Carex frankii Kunth. 



Wet ground; Piedmont Region. June-Aug. Southern states, north to Pa. (C 

 stenolepis Torr.) 



86. Carex squarrosa L. 



Swampy places throughout the region. May- Aug. Eastern U. S. 



87. Carex typhina Michx. 



Lakeland, Aug. 4, 1900 and June 5, 1902 {Steele). Eastern U. S. (C. typhinoides 

 Schwein.) 



88. Carex foUiculata L. 



Rather frequent in toggy places, especially in the Coastal Plain. June-Aug. 

 Northern states, south to N. C. 



89. Carex collinsii Nutt. 



Collected but once, in a small bog near Suitland, July 4, 1917. R. I. to Ga. (C 

 subulata Michx.) 



