Jepson Flora Project: Jepson Interchange    

The Jepson Manual: Higher Plants of California

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

Names are linked to treatments from the Manual


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

  1. Stolons conspicuous; flower bilateral (3 upper petals spotted, << 2 lower)
S. stolonifera
  1' Stolons 0; flower radial or ± bilateral (3 upper petals spotted, ± = 2 lower in S. ferruginea)
    2. Leaves cauline on ± trailing stem
      3. Flowers in few-flowered racemes or panicles
S. nuttallii
      3' Flowers at tip of long peduncle, 1–2 or in head-like clusters
        4. Leaf blade 3–5-lobed at tip; flowers 1–2
S. cespitosa
        4' Leaf blade entire; flowers in head-like clusters
S. tolmiei
    2' Leaves basal, sometimes a few smaller and cauline
      5. Leaf blade generally 5–8 mm
S. rivularis
      5' Leaf blade generally > 15 mm
        6. Filaments wider above than below
          7. Leaf blade base truncate to tapered; ovaries fused only at base; fruit 2 follicles
            8. Inflorescence open; sepals reflexed; petal spots 2; filaments generally much-widened above middle
S. marshallii
            8' Inflorescence dense toward tips; sepals spreading; petal spots 0; filaments ± widened except near tip
S. rufidula
          7' Leaf blade base generally cordate to reniform; ovaries fused throughout; fruit a capsule
            9. Leaf blade teeth irregular, rounded, base generally cordate; petiole hairy; petals not falling early, ovate to elliptic, spots 0; capsule dark purple
S. mertensiana
            9' Leaf blade teeth regular, sharp, base generally reniform; petiole ± glabrous; petals ephemeral, round to elliptic, spots 2; capsule tip purple, base yellow-banded
S. odontoloma
        6' Filaments wider below than above
          10. Ovary superior in flower and fruit
            11. Inflorescence bulblets 0; ovaries < half-fused; petal spots 0
S. howellii
            11' Inflorescence bulblets axillary to lower bracts; ovaries > half-fused; some petals spotted
              12. All petals spotted; leaf blade linear-elliptic, entire or teeth minute or sparse
S. bryophora
              12' 3 upper petals spotted; leaf blade obovate, teeth generally coarse
S. ferruginea
          10' Ovary ± half-inferior in flower, superior in fruit
            13. Leaf blade linear to oblanceolate, generally > 10 cm, long-tapered to an indistinct petiole; bogs and marshes
S. oregana
            13' Leaf blade elliptic, obovate, or ovate, generally < 10 cm, short-tapered to a distinct petiole; many habitats but not bogs or marshes
              14. Leaf blade shallowly toothed; inflorescence ± open, often 1-sided; styles on fruit generally > 1.5 mm
S. californica
              14' Leaf blade ± entire; inflorescence open between ± head-like clusters, not 1-sided; styles on fruit generally < 1 mm
                15. Petals generally < 2 mm, sepals ± reflexed to spreading
S. nidifica var. nidifica
                15' Petals generally > 2 mm, sepals ± erect to spreading
                  16. Inflorescence ± glabrous to sparsely glandular; leaves ± glabrous; > 1500 m
S. aprica
                  16' Inflorescence densely glandular; leaves ± hairy; < 1000 m
S. integrifolia

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