Common names: Pursh's blue maidencane Hairy maidencane
Synonyms: Amphicarpum purshii
Found in FNA Volume 25. Treatment on page 387.
Plants annual. Culms 30-80 cm, erect. Leaves mostly basal; sheaths hirsute; blades 10-15 cm long, 5-15 mm wide, hirsute on both surfaces, margins ciliate. Subterranean spikelets 7-8 mm, acuminate. Aerial panicles 3-20 cm; aerial spikelets 4-5 mm, ellipsoidal. 2n = 18.
Amphicarpum amphicarpon grows in sandy pinelands of the eastern United States. It used to be known as A. purshii Kunth, but A. amphicarpon has priority.