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(1. Cyperus.) 



filiciilinis, Vahl. 



Sterile soil; Dixon's, &c. Frequent. Aug. 

 ovularis, Torr. (Mariscus, Vahl.) 



Dry hills; Brandy wine, &c. Frequent. Aug. 

 retrofractus, Torr. 



Brandywine hills (Dr. Michener), B. Hoopes. Aug. 



2. Dl'LICHIUM, Richard. 



spathaceum, Pers. (Sheathed Galingale.) 



Swamps throughout the county. Common. July. 



3. Eleocharis, R. Br. 



obtusa, Schultes. 



Swamps, &c. Common. June, 

 palustris, R. fir. 



Wet meadows; Brandywine, &c. Frequent. June, 

 tenuis, Schultes. 



Muddy places. Common. June, 

 acicularis, R. fir. 



Miry places; Brandywine; Col. Davis' (J. H. Brake- 

 ley). Frequent. June, 

 pygmsea, Torr. 



Moist meadows; Cherry Island. Bare. July. 



4. Scirpus, L. 



planifolius, Muhl. 



Moist woods; Davis', &c. Frequent. May. 

 pungens, Vahl. (Chair- makers' Bush.) 



Muddy shores. Common. July, 

 laciistris, L. (Bulrush.) 



Ditches and muddy shores. Frequent. June, 

 debilis, Pursh. 



Low sandy banks. Frequent. Aug. 

 maritimus, L. (Sea Club-Bush.) 



Muddy shores of Christiana (B. Hoopes). Not com- 

 mon. June, 

 fluviatilis, Gray. (River Club-Rush.) 



Wilmington marshes (Dr. Michener). July, 

 sylvaticus, L., var. atrovirens, Gr. 



Wet places. Frequent. June, 

 polyphyllus, Vahl. 



Swamps and thickets. Common. July. 



