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 OREONANA

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

  1. Herbage white-tomentose; umbels hemispheric; corolla yellow or maroon; anthers yellow; calyx lobes inconspicuous, obscured by hairs
 O. vestita
  1' Herbage grayish hairy; umbels spheric; corolla white; anthers purple; calyx lobes conspicuous, stellate-spreading
 
    2. Flowers appearing ± with leaf blades; bladeless sheaths 0.5–2 cm; umbels 1–3 cm; rays 5–15, 2–8 mm; calyx lobes yellow
 O. clementis
    2' Flowers appearing before leaf blades; bladeless sheaths 3–6 cm; umbels 2.4–4.5 cm; rays 20–35, 5–15 mm; calyx lobes purple
 O. purpurascens

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