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 ZIGADENUS

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

  1. Perianth parts 3–6 mm, stamens = or > perianth
 
    2. Inflorescence a well developed panicle; flowers of main axis bisexual; flowers of branches often staminate; stamens 1–2 mm > perianth
Z. paniculatus
    2' Inflorescence raceme-like (rarely branched below); flowers all bisexual; stamens ± = perianth
 
      3. Plant scabrous; inflorescence widely conic, pedicels 15–40 mm, spreading; perianth parts short-clawed
Z. micranthus var. micranthus
      3' Plant glabrous; inflorescence narrowly conic, pedicels 6–12 mm, ascending; perianth parts long-clawed
Z. venenosus var. venenosus
  1' Perianth parts 5–15 mm, stamens < perianth
 
    4. Perianth parts 5–8 mm — pedicels spreading
 
      5. Pedicels not upturned at tip; styles widely spreading or recurved; Mojave Desert, Tehachapi Mountain Area, Western Transverse Ranges
Z. brevibracteatus
      5' Pedicels upturned at tip; styles erect; wet soils, North Coast Ranges, Central Western California
Z. micranthus var. fontanus
    4' Perianth parts 8–15 mm
 
      6. Flowers of lower inflorescence branches staminate; perianth parts 8–12 mm, ovate, obtuse, stamens 2/3–3/4 perianth length; Sierra Nevada
Z. exaltatus
      6' Flowers bisexual; perianth parts 8–15 mm, lanceolate to ovate, acute, stamens ± 1/2 length parts; w California
Z. fremontii


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