Carex CYPERACEAE Carex 



C. tribuloides Wahl. 



Frequent, in low ground, chiefly Coastal Plain. June, July. 



C. cristatella Britton. (C. cristata of Gray's Man., ed. 7.) 



Rare: meadow near Centreville (NC), Commons, Aug. 1873 (A); 

 thickets along Mill Creek (NC), Canby, 16 June 1897 (D); river 

 flats, Conowingo (Ce), /. Crawford, 31 July 1924 (A). 



Polytrichoideae 

 C. leptalea Wahl. 



Infrequent; in swamps. New Castle and Sussex Counties; not 

 recently reported. June. 



Var. Harperi (Fernald) Stone. (C. Harperi Fernald.) 



Infrequent; swamps and wet woods, Coastal Plain. May, 

 June. 



Phyllostachyae 

 C. Willdenowii Schk. 



Rare; northern New Castle County, in dry woods and on 

 serpentine soil, June. Not reported since 1897. 



Montanae 



C. artitecta Mack. (C varia Muhl.) 



Common; dry woods or open places, chiefly in the Piedmont. 

 April to June. 



C. Emmonsii Dewey 



Infrequent; dry woods and low ground, chiefly Coastal Plain. 

 Late April, May. 



C. nigromarginata Schw. 



Frequent on serpentine soil and dry rocky hillsides of the Pied- 

 mont, and on dry sandy soil of the Coastal Plain. Mid-April, 

 May. 



C. communis Bailey. 



Common; rocky woods of the Piedmont. April, May. 



C. pennsylvanica Lam. 



Frequent; rocky woods, serpentine soil and pond margins, in 

 both Piedmont and Coastal Plain. Mid- April to June. 



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