Tridens flavus (purple top) is a tufted native perennial graminoid. Another common name is tall redtop. Stems with purple nodes Inflorescence an open often drooping panicle. Spikelets laterally compressed, 4-8 floreted, disarticulating above the glumes; glumes subequal, shorter than the lowermost lemma; lemma 3-nerved, nerves pubescent in lower portion; paleas 2-nerved, nerves short-ciliate; caryopsis ellipsoid to ovoid, yellow. A fairly common grass in the edges of forests and disturbed areas throughout the state but mainly in the pine regions. A lot of this grass on Allen Acres. Caterpillars of these butterflies, Common Wood Nymph, Dun Skipper, Clouded Skipper, Crossline Skipper, and Little Glassywing are reported to eat this species. And, caterpillars of Leonard's Skipper and Zabulon Skipper are reported to eat the genus Tridens.