Tridens flavus (Purpletop Tridens) is a species of perennialgrass in the family true grasses. They are native to The Contiguous United States. They have yellow flowers. Individuals can grow to 2.5 feet.
Definition: Of plant duration, a plant whose life span extends over more than two growing seasons, c.f. annual, biennial, ephemeral, of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic
Definition: A color hue with medium wavelength of that portion of the visible spectrum lying between orange and green, evoked in the human observer by radiant energy with wavelengths of approximately 570 to 590 nanometers.