Poaceae

Eastern gamagrass

Tripsacum dactyloides (L.) L.

Family: Poaceae
Genus: Tripsacum

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Eastern gamagrass (Tripsacum dactyloides) — FlowerPhoto: Douglas Goldman, CC BY-SA 4.0, from iNaturalist

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Common names

By language (2)

Chinese: 指狀加拿草, 鸭茅状磨擦禾, 鸭足状磨擦草
English: Eastern gamagrass, Florida gamagrass

Synonyms

Coix angulata Mill.
Coix dactyloides L.
Dactylodes angulatum Kuntze
Dactylodes dactyloides (L.) Kuntze
Ischaemum glabrum Walter
Tripsacum bravum J.R.Gray
Tripsacum compressum E.Fourn.
Tripsacum dactyloides f. prolificum R.S.Dayton & Dewald
Tripsacum dactyloides subsp. dactyloides
Tripsacum dactyloides subsp. hispidum Hitchc.
Tripsacum dactyloides var. angustifolium Scribn.
Tripsacum dactyloides var. dactyloides
Tripsacum dactyloides var. floridanum (Porter ex Vasey) Beal
Tripsacum dactyloides var. genuinum Hack.
Tripsacum dactyloides var. hispidum (Hitchc.) De Wet & J.R.Harlan
Tripsacum dactyloides var. meridionale De Wet & Timothy
Tripsacum dactyloides var. mexicanum De Wet & J.R.Harlan
Tripsacum dactyloides var. monostachyon (Willd.) Eaton & Wright
Tripsacum dactyloides var. monostachyum (Willd.) Hack.
Tripsacum dactyloides var. occidentale Cutler & E.S.Anderson
Tripsacum floridanum Porter ex Vasey
Tripsacum monostachyon Willd.

Flowers

In flower: April to September (from 316 flowering iNaturalist observations worldwide)
Flower colour: yellow (USDA PLANTS Database)

Characteristics

Growth habit: Graminoid
Lifespan: Perennial
In the US and Canada: Lower 48 states: native

Photos

FlowerPhoto: Douglas Goldman, CC BY-SA 4.0, from iNaturalist
FlowerPhoto: Anne Parker, CC BY 4.0, from iNaturalist
FlowerPhoto: Turner Brockman, CC BY-SA 4.0, from iNaturalist
FlowerPhoto: Clay Gibbons, CC BY 4.0, from iNaturalist
Photo: Samuel Buckner, CC BY 4.0, from iNaturalist
Photo: Judy Gallagher, CC BY 2.0, from Wikimedia Commons
Photo: Robert Breeding, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons
Photo: Brand R, CC BY 4.0, from iNaturalist
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons
Photo: Michael J. Papay, CC BY 4.0, from iNaturalist
Photo: Judy Gallagher, CC BY 2.0, from Wikimedia Commons

More in Tripsacum

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.