Use selection options listed above to explore this web-informatics system for the genus Carex its relatives. This system uses image files obtained by scanning 539 plates of Kenneth Kent Mackenzie's North American Cariceae as a foundation. Data provided by this classic two-volume set (now out of print) is supplemented, when possible, with references to on-line information for a given species. When you select, via a mouse click, the 'browse' options above, the 'group' selection options will appear below and species-level options, derived from selecting one of these, will appear to the left. Species-level images and data will appear in this window. Return to this page and clear the selection frames by using the 'Help' option above.