For each of the 159 species of Carex in Illinois, there is a full illustration showing the habit of the plant and close-ups of various vegetative and reproductive structures that are crucial for the identification of the individual species.

This is a beautifully illustrated introduction to sedges, an important genus of predominantly wetland plants that make up about 7% of the flora of the upper Midwest.

... Carex diehlii sp . nov . Amer . Midl . Nat . 51 : 268-269 . 1954. New Carex records for Mexico and Central America . Amer . Midl . Nat . 51 : 285–286 . 1960. Two new varieties of Carex from Mexico . Brittonia 12 : 78-79 . 1967. A new ...