Plants cespitose, often with hard, knotty, shortly rhizomatous bases. Culms
30-100 cm; lower nodes sometimes sparsely bearded. Sheaths glabrous,
not or obscurely keeled; ligules to 0.5 mm, membranous, ciliate; blades
1-4 mm wide, folded or involute, glabrous, apices sharp. Panicles 8-25
cm long, 0.5-1.3 cm wide, dense; branches appressed, lowest branches
2-6 cm; pedicels 1-2 mm. Spikelets 4-10 mm, with 4-11 florets. Glumes about
as long as the adjacent lemmas, thin, 1-veined, acute or apiculate; lower
glumes
4-4.5 mm; upper glumes 4-4.5 mm; lemmas 3-4(5) mm, thin,
papery, mostly white, often purple distally, glabrous or the lateral veins
with a few short hairs towards the base, all veins ending before the distal
margin; paleas
3-3.5 mm, glabrous, bowed-out at the base; anthers 1-1.5 mm. Caryopses
1.5-1.8 mm. 2n = 60, 64, 72.
Tridens albescens grows in plains and open woods, often in clay soils that
periodically receive an abundance of water. Its range extends into northern Mexico.
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