[Picture of <em>Carex densa</em>]

Databases, Atlases, and Nomenclatural Resources

Native Plant Societies and Other Plant Organizations

Flora of Oregon, Volume 1 (purchase)
Oregon Flora Project, Volume 1, Additions and Corrections

Abbreviations for all links below:
CWG = Carex Working Group.
DK = dichotomous key.
FNA = Flora of North America.
IK = interactive key.
PNW = Pacific Northwest (North America).
Tables = conspectus tables comparing various species.