Tridens strictus (longspike tridens or longspike fluff grass) is a tufted native perennial graminoid. Culms 8-17 dm tall. Inflorescence a terminal contracted panicle. Spikelets laterally compressed, 6-12 floreted; glumes longer than lowermost lemma, about as long as the spikelet or longer, 1-nerved, acute to short-awned, 4.5-5 mm long; lemmas 3-nerved, 2-3.5 mm long, short-awned, bidentate, lateral nerves ending in a short cusp, margins scarious; paleas falcate, 1.5-3 mm long; caryopsis ovoid, 1-1.5 mm long, yellow. A few plants scattered across Allen Acres.