556 PROCEEDINGS OF THE ACADEMY OF [Oct., 



48. Cyperus filiculmis macilextus Fernald. 

 Frequent on dry open barren. 



Delaware. — Middletown Barrens; Williamson; Lenni; Wawa. 

 Chester. — Serpentine Ridge; Cedar Barrens; West Chester; Brin- 

 ton's Quarry. 



49. Eleocharis texuis (Willd.) Schultes. 



Abundant on wet sandy depressions. 



Delaware. — Mineral Hill; Williamson. 



Chester. — Serpentine Ridge; Cedar Barrens; West Chester. 



*50. Fimbristylis laxa Vahl. 



Common on moist sand} r depressions. 



Delaware. — Preston Run; Mineral Hill (B. Heritage); Middletown 

 Barrens; Williamson; Wawa. 



Chester. — Sugartown Barrens (E. B. Bartram); Serpentine Ridge; 

 Cedar Barrens; West Chester; Marshallton (B. Long); Unionville. 



— Nottingham Barrens. 



f51. Scirpus atrovirexs Muhl. 



Frequent in moist soil. 



Dela ware. — Williamson. 



Chester. — West Chester; Brinton's Quarry. 



— Nottingham Barrens. 



52. Rhyxchospora glomerata (L.) Vahl. 



Occasional in moist soil. 



Chester. — Serpentine Ridge; Cedar Barrens. 



f53. SCLERIA TRIGLOMERATA Michx. 



Frequent on dry open barren, and edges of greenbrier thicket. 



Dela ware. — Williamson. 



Chester. — Sugartown Barrens; Unionville. 



— Nottingham Barrens. 



|54. SCLERIA PAUCIFLORA Mllhl. 



Abundant on dry open barrens. 



Delaware. — Mineral Hill; Williamson; Lenni (J. H. Redfield) ; Wawa. 

 Chester. — Sugartown Barrens; Serpentine Ridge; Cedar Barrens; 

 West Chester ; Unionville. 



— Nottingham Barrens. 

 Lancaster. — Texas (Dr. Geo. Smith). 



