Key to Wisconsin Cinna

Authors: Robert W. Freckmann, John G. Zaborsky, Emmet J. Judziewicz

• 1a.Spikelets 4.5–7 mm long; upper glumes 3-veined C. arundinacea

• 1b.Spikelets 2.5–4 mm long; upper glumes usually 1-veined C. latifolia