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Tridens flavus (Linnaeus) A.S. Hitchcock. Redtop, Tall Redtop, Purpletop Tridens, Greasy Grass. Phen: Mar-Nov. Hab: Roadsides, disturbed areas, glades, barrens. Dist: NH west to NE, south to s. FL and TX.

Origin/Endemic status: Native

Synonymy: = HC, Il, NcTx, Pa, SFla, Tn, Va; = Tridens flavus (L.) Hitchc. var. flavus – Ar, C, ETx1, FlGr, FNA25, K1, K3, K4, Mo1, NE, RAB, Tx, WH3, Witsell & Baker (2013); = Tridens seslerioides (Michx.) Nash var. seslerioides – S13; = Triodia flava (L.) Smyth – F, G, Tat, WV; < Tridens flavus (L.) Hitchc. – W; < Triodia flava (L.) Smyth – S

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACU
  • Eastern Mountains and Piedmont: FACU
  • Great Plains: UPL
  • Midwest: UPL
  • Northcentral & Northeast: UPL

Heliophily: 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷


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