Plants cespitose, sometimes appearing rhizomatous, glaucous. Culms
39-160 cm, branching at the lower nodes, often rooting from nodes in contact with
the soil; lower internodes usually shortened and compressed. Leaves
glaucous; collars usually constricted, elongate; auricles flexible,
yellow; ligules 1.5-2 mm; blades 10-30 cm long, 3.5-6.5 mm wide,
without a longitudinal stripe of white, spongy tissue. Peduncles 0.5-5
mm; rames 3-9 cm, with 13-19 spikelets, arcuate at maturity; internodes
4-6 mm, densely villous, hairs 3-7.5 mm. Sessile spikelets 6-10 mm; calluses
0.2-0.5 mm, glabrous; lower glumes glabrous; awns 9-20 mm. Pedicels
5-7 mm, hairy distally, hairs 5-7 mm. Pedicellate spikelets 1.5-5 mm, often
staminate, unawned or awned, awns to 3.5 mm. 2n = 40.
Schizachyrium littorale is restricted to shifting, coastal sand dunes of
the Gulf, Atlantic, and Great Lakes coasts of the United States. It often appears
rhizomatous because the lower nodes are frequently covered by sand.