Carex echinata  
Family: Cyperaceae
large-fruited star sedge, prickly sedge, star sedge
Carex echinata image
Linda W. Curtis  
Carex echinata image
Andrew Hipp  
Carex echinata image
Emmet J. Judziewicz  
Carex echinata image
Robert H. Read  
Carex echinata image
Andrew Hipp