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See list of 3 species in this genus

Reference: Haynes and Hellquist (2000b).

  • 1a. Leaves usually equaling the height of the flowering stem, arching outward from the sheath [Fig. 156], 0.5–1 mm wide; racemes 2–5 (–7) cm tall
  • 1b. Leaves usually shorter than the flowering stem, erect, 0.8–1.4 mm wide; racemes 6–45 cm tall
    • 2a. Flowers with 6 carpels and 6 stigmas; mature schizocarps 1.5–2 mm wide, ca. 2 times as long as wide, the cluster of 6 mericarps on a slender, non-wing-angled axis; ligule apically 2-lobed
    • 2b. Flowers with 3 carpels and 3 stigmas; mature schizocarps 0.8–1.2 mm wide, ca. 5–7 times as long as wide, the cluster of 3 mericarps on a triquetrous axis; ligule not lobed

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 Show photos of:   Each photo represents one species in this genus.