Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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



Perennial from stout, branched caudex
Stems 1–few, ascending to erect, branched to not
Leaves 1–4(5), generally 1–3(4)-ternate, lowest scale-like, fibrous, sheathing
Inflorescence: raceme, axillary or terminal
Flower radial; sepals 3–5, petal-like, early deciduous; petals 4–10, rarely 0, oblanceolate to spoon-shaped; pistil 1, placentas 2, ovules several
Fruit: berry
Species in genus: 5–6 species: temp North America, Eurasia
Etymology: (Greek: ancient name, from wet habitat and similarity to Sambucus leaves)
Fr TOXIC to humans.


var. alismellus A. Gray

Plant 4–20(30) cm
Leaf: basal blade 2–4 cm, generally ovate
Flower: petals 5–7 mm
Ecology: Habitats of sp.
Elevation: 1400–3600 m.
Bioregional distribution: Klamath Ranges, High North Coast Ranges, High Cascade Range, High Sierra Nevada, San Bernardino Mountains, San Jacinto Mountains, n White and Inyo Mountains
Distribution outside California: to Washington, Nevada
Flowering time: Jun–Jul
Horticultural information: WET or IRR, DRN: 1, 2, 7 &SUN: 4, 5, 6, 15, 16, 17.


var. subrigidus (W.B. Drew) Breitung

Leaves generally << internodes; submersed leaves 3–5-dissected, segments thread-like, petioles generally flat, wide ± throughout; floating or emergent generally 0 or like submersed
Inflorescence: pedicel recurved in fruit
Fruits 10–50
Ecology: Habitats of sp.
Elevation: < 1800 m.
Bioregional distribution: n Cascade Range, Central Coast, n High Sierra Nevada, San Jacinto Mountains, Modoc Plateau
Distribution outside California: to British Columbia, eastern N.America, Mexico
Synonyms: R. subrigidus W.B. Drew
Much like var. capillaceus.


R. bonariensis Poiret var. trisepalus (Hook. & Arn.) Lourteig

Annual 4–20(30) cm
Stem decumbent to erect, generally branched below middle; hairs 0–sparse
Leaves lanceolate to ovate, generally glabrous; basal and lower cauline petioles 1.5–8.5 cm, blades 0.6–2 cm, generally entire; upper cauline leaves generally smaller
Flower: receptacle glabrous; sepals 3, 2–3 mm; petals 2–3, 2–3 mm, ± 1 mm wide
Fruits 9–many; cluster conic to ovoid; body 1–1.5 mm, ± 1 mm wide, ± plump, smooth to finely net-like, back rounded; beak minute
Ecology: Clay soils, vernal pools
Elevation: < 1200 m.
Bioregional distribution: n&c Sierra Nevada Foothills, e Great Central Valley (except s San Joaquin Valley)
Synonyms: R. alveolatus Carter
Other vars. in Chile, Argentine.

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