|Photo by Steve Dickman, Atlas of Florida Vascular Plants|
|Division:||Magnoliophyta – Flowering plants|
|Class:||Liliopsida – Monocotyledons|
|Family:||Poaceae ⁄ Gramineae|
| Tridens carolinianus|
|Natural range of Tridens carolinianus from USDA NRCS Plants Database.|
Common names: Carolina fluffgrass, Carolina triodia
Synonym: Triodia drummondii Scribner & Kearney
"Erect rhizomatous perennials. Spikelets compressed, glumes similar, shorter than lowest lemma. Lemmas 3-nerved, nerves ciliate, reduced upward, chartaceous; paleas equaling lemmas. Articulation below florets." 
"Perennial from elongate, scaly rhizomes, 2.5-5 mm thick; culms 8-12 dm tall, nodes and internodes glabrous. Leaves cauline, to 3.5 dm log, 2-7 mm wide; upper blades glabrous on both surfaces, lower blades sparsely pilose on both surfaces basally, margins smooth scaberulous; upper sheaths glabrous, lower, pilose; ligules ciliolate, 0.5 mm long. Panicle 9-15 cm long, 1-4 cm broad; branches ascending, glabrous. Spikelets 4-5 flowered, 7-9 mm long, 2-3 mm broad. Glumes 1-nerved, chartaceous, glabrous, retuse, cuspidate; 1st glume 3.5-4.5 mm long, 2nd glume 4-5 mm long; lemmas retuse, cuspidate, longest 4-5 mm long. Grain yellowish, ellipsoid, 2-2.5 mm long." 
In the Coastal Plain in Florida and Georgia, T. carolinianus has been found in open longleaf pine forests; loamy sand of open pinewoods sandhill; annually burned pinelands; longleaf pine-live oak forests; sandy loam of longleaf pine-deciduous scrub oak forests; mesic longleaf pine-oak-persimmon community; and open, mesic pine flatwoods.  It has also been found in disturbed habitats such as pastures and old fields. Associated species include Quercus margarettae, Q. incana, Q. falcata, Liatris gracilis, Liatris tenuifolius, Ceanothus americanus, Aristida beyrichiana, Pityopsis graminifolia var. tenuifolia, Schizachyrium tenerum, Eriogonum tomentosum, Licania michauxii, and Ctenium. 
It flowers and fruits August through November. 
This species is thought to be dispersed by gravity. 
Conservation and management
Cultivation and restoration
References and notes
- Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 63. Print.
- Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, Wilson Baker, Robert K. Godfrey, Roy Komarek, Angus Gholson, J. M. Kane, R. Kral, John B. Nelson, B. A. Sorrie. States and Counties: Florida: Gulf, Jackson, Santa Rosa, Wakulla, Walton, Washington. Georgia: Baker, Grady, Thomas. Compiled by Tall Timbers Research Station and Land Conservancy.
- Kirkman, L. Katherine. Unpublished database of seed dispersal mode of plants found in Coastal Plain longleaf pine-grasslands of the Jones Ecological Research Center, Georgia.