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.



Dieter H. Wilken, except as specified

Annual, perennial herb, sometimes aquatic
Leaves generally basal and cauline, generally alternate, simple or compound; petioles at base generally flat, sometimes sheathing or stipule-like
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; sepals generally 5, free, early deciduous or withering in fruit, generally green; petals 0–many, free; stamens generally 10–many; pistils 1–many, ovary superior, chamber 1, style 1, generally ± persistent in fruit as beak, ovules 1–many
Fruit: achene, follicle, berry, or utricle-like, 1–many-seeded
Genera in family: ± 60 genera, 1700 species: worldwide, especially n temp, tropical mtns; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Erianthis, Helleborus ), some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus )
Reference: [Duncan & Keener 1991 Phytologia 70:24–27]



Perennial from stout, simple to branched caudex, rhizome, or tuber
Stems 1–several, erect, generally simple
Leaves simple to 1-ternate, blade or leaflet toothed to dissected; basal leaves rosetted, petioled, in flower or fruit withered or persistent; cauline leaves generally 2–3, in 1–2 whorls, petiole 0 to short
Inflorescence terminal; peduncles 1–5, erect, 1-flowered, in fruit elongated
Flower radial; receptacle in fruit elongated; sepals 5–8(10), petal-like; petals 0; pistils many, styles in fruit generally persistent, generally glabrous to puberulent
Fruit: achenes, densely clustered
Species in genus: ± 100 species: temp worldwide
Etymology: (Greek: flower shaken by wind)
Some species cultivated for ornamental. Plants with long, plumose styles sometimes separated as Pulsatilla.


A. deltoidea Hook.

Plant 10–25 cm; rhizome slender
Stem generally 1; hairs 0 to sparse
Leaves: basal generally 1, 1-ternate, petiole 10–15 cm, short-stiff-hairy, leaflets 3–6 cm, ovate, crenate or sharp-toothed to lobed; cauline simple, 3–8 cm, ovate, toothed to lobed, petioles ± 0
Inflorescence: flower 1
Flower: sepals generally 5, 15–25 mm, white, glabrous
Fruit: cluster ± spheric, 9–12 mm, glabrous to puberulent; styles < 1 mm
Ecology: Open to shaded sites, coniferous forest
Elevation: 200–2000 m.
Bioregional distribution: n North Coast, Klamath Ranges, High North Coast Ranges
Distribution outside California: to Washington
Horticultural information: SHD, IRR, DRN: 1, 2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 18.

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