Tridens ambiguus
pine barren fluffgrass, pine-barren tridens
60-125 cm.
rounded or the basal sheaths keeled, glabrous, except for a few hairs on either side of the collar;
ligules 1-2 mm, membranous, ciliate;
blades 2-5 mm wide, elongate, usually involute distally.
8-16(20) cm long, 1.5-4 cm wide, not dense;
branches to 8(10) cm, erect to divergent, stiff;
pedicels shorter than 1 mm.
4-6 mm long, pale to dark purple, with 4-6 florets.
1-veined;
lower glumes 4-4.5 mm;
upper glumes about 5 mm;
lemmas 3-4 mm, veins pubescent to midlength or beyond, midveins excurrent, lateral veins often excurrent;
paleas 3-3.5 mm, veins ciliolate, bases bowed-out;
anthers 1-1.5 mm.
1.5-1.8 mm.
= 40.
Tridens ambiguus
Tridens ambiguus grows on the southeastern coastal plain, from North Carolina to Texas. It is usually found in mesic to perennially moist soils of pine flatwoods and pine-oak savannahs, in seasonally inundated depressions, and at the margins of pitcher plant bogs, often in disturbed sites.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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