Tridens flavus

Common Name Root: 
purpletop
Common Name Synonyms: 
greasegrass
tall redtop
Scientific Name Genus: 
Tridens
Scientific Name Species: 
flavus
Scientific Name Authority: 
(L.) A.S. Hitchc., Triodia flava, Triodia flavus
Family Name Latin: 
Poaceae (Graminae)
Family Name Common: 
Grass Family
Identification Notes
Life Cycle
introduced perennial, reproducing by seed and short thick, rhizomes
Culms
upright, smooth, round but flattened below, tuft forming
Culms of Purpletop
Culms of Purpletop
Leaves
blades flat, long, tapering to narrow point, smooth, white midrib prominent, rough margins, distinct line perpendicular to midrib on underside, underside glossy, rolled in bud; auricles absent; ligule ring of hairs, very short; sheaths flattened or keeled
Leaves of Purpletop
Leaves of Purpletop
Seedheads
panicle, terminal, open, often drooping when mature, oval to pyramidal, purple to dark purple sometimes almost black, usually covered with an oily or grease-like substance
Seedheads of Purpletop
Seedheads of Purpletop
Seedheads of Purpletop