1887.] NATURAL SCIENCES OF PHILADELPHIA. 73 



45. Carex arctata, Boott. 



Monroe, Pocono, Dr. Traill Green; Sullivan, Chas. E. Smith; 

 'Bi.AiR, Boeckijig ; Elk, McMinn. Rare. Its southern limit. 



46. Carex debilis, Michx. 



Monroe, Pocono ; Northampton ; Bucks, (Moyer's Cat.) ; 

 Delaware, A. H. Smith; Chester, (Fl. Cestr.) ; Lancaster, 

 Smithville Swamp ; Centre, Bear Meadows, Lowrie ; Hunting- 

 don; Bl,aib., Boecking ; Clearfield, ilfcJfmvi ; Mercer, Garber. 



47. Carex debilis, Michx., var. pubera, Gray. 



Centre, Bear Meadows, Lowrie ; Lancaster, Smithville Swamp. 

 Very rare and local. 



48. Carex aestivalis, M. A. Curtis. 



Chester. (Fl. Cestr.); Lackawanna, Carbondale, Garber; 

 Sullivan, C. E. Smith ; Tioga, Garber. Rare. 



49. Carex gracillima, Schweinitz. 



Lehigh, Garber; Northampton; Bucks, (Moyer's Cat.); 

 Chester, (Fl. Cestr.) ; Lancaster ; Franklin ; Blair, Boeching. 

 Common. 



50. Carex Davisii, Schw. & Torr. 



Northampton ; Bucks, (Moyer's Cat.) ; Chester, (Fl. Cestr.) ; 

 Lancaster ; Franklin, Mercersburg. Rare. 



51. Carex grisea, Wahl. 



Monroe, Water Gap, Knipe ; Northampton, Easton ; Buck.s, 

 (Moyer's Cat.) ; Chester, (Fl. Cestr.) ; Lancaster ; Franklin . 

 Blair ; Allegheny, Knipe. Common. 



52. Carex glaucodea, Tuckerman. 



Northampton, Easton, Pen Argyl, Bethlehem, Fiot ; Bucks, 

 Nockamixon Rocks, marshes near Quakertown ; Delaware, Pusey's 

 Woods, A. H. Smith; Lancaster; Lycoming, McMinn. I first 

 met with this species in a swamp near Smithville, Lancaster County, 

 in 1863. It struck me at once as new, and specimens, name and 

 distinctive characters were sent to Col. Olney, who informed 

 me that it had also been discovered near Amherst, Mass., and that 

 Prof. Tuckerman had just described it and his description would 

 soon appear in the Proceedings of the American Academy of Arts 

 and Sciences. Since then, it has been found at a number of stations 

 in Eastern Pennsylvania and the neighboring States. In 1880, I 

 collected it on the summit of Roane Mtn., N. C. 



53. Carex granularis, Muhl. 



Northampton ; Bucks, (Moyer's Cat.) ; Chester, (Fl. Cestr.) ; 



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