Common Name

Purpletop Tridens

Scientific Name

Tridens flavus

A very tall perennial grass with drooping branches bearing widely spaced reddish-purple spikelets. The seeds are also oily, leading to its other common name, “grease grass”. When seen growing in bunches across fields this grass creates a wave of purple swaying in the wind.

  • Kingdom: Plantae
  • Phylum: Tracheophyta
  • Class: Liliopsida
  • Order: Poales
  • Family: Poaceae
  • Genus: Tridens
  • Species: Tridens flavus
Habitat

Grassland, Urban

Distribution

Native to eastern North America, it is widespread throughout its range and is most often found in man-made habitats, such as hay meadows and lawns.

Abundance

Common

Activity Time

Diurnal

Diet

Behavior

Ecological Role

Used for grazing and nesting material, it is also the larval host of the Common wood nymph, Crossline skipper, Little glassywing, and the Zabulon skipper

Conservation Status

Least Concern

Threats & Impacts

Notes