The Jepson Manual: Higher Plants of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

Names are linked to treatments from the Manual


Key to TRISETUM

N.B.: couplets are linked, e.g., 1. is linked to 1'.

  1. Lemma ± awnless
T. wolfii
  1' Lemma awn 4–12 mm
 
    2. Inflorescence generally spike-like, dense, awns spreading, leaves generally basal, tufted
T. spicatum
    2' Inflorescence generally panicle-like, ± dense to open, awns generally ascending to erect, leaves basal and cauline
 
      3. Lower inflorescence branches generally spreading, lower glume < 2 mm, upper glume tip irregularly 1–2-toothed
T. cernuum
      3' Lower inflorescence branches ascending to erect, lower glume 4–5 mm; upper glume acute
 
        4. Spikelets green to tan, ligules generally > 1 mm, obtuse to truncate; inflorescence axis ± hairy
T. canescens
        4' Spikelets golden brown, ligules < 1 mm, ring-like; inflorescence axis glabrous
T. flavescens


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