Tridens flavus (Linnaeus) A.S. Hitchcock. Common name: Redtop, Tall Redtop, Purpletop Tridens, Greasy Grass. Phenology: Mar-Nov. Habitat: Roadsides, disturbed areas, glades, barrens. Distribution: 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
Links to other floras: = Tridens flavus var. flavus - FNA25
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACU
- Eastern Mountains and Piedmont: FACU
- Great Plains: UPL
- Midwest: UPL
- Northcentral & Northeast: UPL
Heliophily ⓘ: 8
Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.
© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Gary P. Fleming | Original Image ⭷
© Scott Ward | Original Image ⭷
© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Keith Bradley | Original Image ⭷
© Scott Ward | Original Image ⭷
© Erik Danielson source | Original Image ⭷
© Bruce A. Sorrie | Original Image ⭷
| 
© Radford, Ahles and Bell | Original Image ⭷Feedback
See something wrong or missing on about Tridens flavus? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.
Horticultural Information
Intro:
Stems:
Leaves:
Inforescence:
Flowers:
Fruits:
Comments:
Height:
plant sale text:
bloom table text:
description:
stems:
leaves:
inflorescence:
flowers:
fruits:
comments:
cultural notes:
germination code:
native range: eastern & central North America