Tridens albescens

(Vasey) Wooton & Standl.
Common names: White tridens
Synonyms: Triodia albescens
Treatment appears in FNA Volume 25. Treatment on page 34.

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.


Kans., Okla., N.Mex., Tex., La., Tenn., Ariz.


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.

Selected References


Lower Taxa