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longspike tridens

Habit Plants with hard, knotty, shortly rhizomatous bases.
Culms

50-170 cm, stiffly erect.

Sheaths

rounded, glabrous except for a few hairs on either side of the collar;

ligules about 0.5 mm, membranous, ciliate;

blades 2-8 mm wide, flat or loosely infolded, glabrous, tapering to the apices.

Panicles

10-30(36) cm long, 1-2 cm wide;

branches to 6 cm, erect or appressed;

pedicels 1-1.5 mm, glabrous.

Spikelets

4-7 mm, with 5-11 florets.

Glumes

4-7 mm, always conspicuously exceeding and often twice as long as the adjacent lemmas, usually equaling or exceeding the distal florets, glabrous, 1-veined, tapering to acuminate apices;

calluses pilose;

lemmas (2)3-3.5 mm, veins pilose to well above midlength, lateral veins often excurrent;

paleas 2-3 mm, bases not bowed-out;

anthers 1-1.5 mm.

Caryopses

1-1.5 mm.

2n

= 40.

Tridens strictus

Distribution
from FNA
AL; AR; FL; GA; IL; KS; KY; LA; MO; MS; NC; OK; PA; SC; TN; TX; VA
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Discussion

Tridens strictus grows in open woods, old fields, right of ways, and coastal grasslands. It is endemic to the United States.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 25, p. 34.
Parent taxa Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Tridens
Sibling taxa
T. albescens, T. ambiguus, T. buckleyanus, T. carolinianus, T. congestus, T. eragrostoides, T. flavus, T. muticus, T. texanus
Name authority (Nutt.) Nash
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