Jepson Flora Project: Jepson Interchange    

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

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

RANUNCULACEAE

BUTTERCUP FAMILY

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]

DELPHINIUM

LARKSPUR

Michael J. Warnock

Perennial; root generally < 10 cm, ± fibrous or fleshy; buds generally obscure
Stem generally 1, erect, generally unbranched; base generally ± as wide as root, generally firmly attached to root, generally ± reddish or purplish
Leaves simple, basal and cauline, petioled; blades generally palmately lobed, deep lobes generally 3–5, generally < 6 mm wide, generally also lobed; lower leaves generally dry, often 0 in flower; cauline merging into bracts upward
Inflorescence: raceme or somewhat branched, terminal; flowers generally 10–25; pedicels generally ± spreading
Flower bilateral; sepals 5, petal-like, generally spreading, generally ± dark blue, uppermost spurred; petals 4, << sepals, upper 2 with nectar-secreting spurs enclosed in uppermost sepal, lower 2 clawed, with blades generally 4–8 mm, notched, generally ± perpendicular to claws, generally colored like sepals, generally obviously hairy; pistils 3(–5)
Fruit aggregate of 3(–5) erect follicles, generally 2.5–4 X longer than wide
Seed dark brown to black, often appearing white, generally winged when immature, generally without inflated collar; coat cell margins generally straight
Etymology: (Latin: dolphin, from bud shape)
Reference: [Lewis & Epling 1954 Brittonia 8:1–22]
Hybrids common, especially in disturbed places. Root length here includes coarse but not thread-like parts. Most species highly TOXIC, attractive and causing many deaths to cattle, less often to horses, sheep.
Horticultural information: Exc as noted, successful In cultivation only within natural range and habitat. Lowland subsp.: DRY. Upland species: winter chilling required.

Native

D. hansenii (Greene) Greene

HANSEN'S LARKSPUR


Stem 25–180 (generally 40–80) cm; base puberulent to hairy
Leaf hairy, especially on lower surface; lobes 3–18; petioles hairy
Inflorescence: flowers often > 25; pedicels 3–57 mm, generally < 8 mm apart, ± ascending, puberulent
Flower: sepals spreading to forward-pointing, lateral 7–13 mm, spur 6–16 mm; lower petal blades generally hairier on inner lobes
Fruit 8–20 mm, often < 3 X longer than wide
Seed finely prickly
Ecology: Oak woodland or open chaparral
Elevation: 60–3000 m.
Bioregional distribution: Inner North Coast Ranges, Cascade Range Foothills, Sierra Nevada Foothills, c&s High Sierra Nevada, Tehachapi Mountain Area, Great Central Valley, w edge Mojave Desert.

Native

subsp. ewanianum M.J. Warnock

EWAN'S LARKSPUR


Stem 25–130 cm; base generally puberulent
Leaves: basal generally few in flower
Inflorescence: pedicels 6–25 mm apart
Flower: sepals violet-purple to maroon, lateral 8–12 mm, spur 6–16 mm
Chromosomes: 2n=32
Ecology: UNCOMMON. Oak woodland
Elevation: 60–600 m.
Bioregional distribution: Sierra Nevada Foothills, San Joaquin Valley
Horticultural information: DRN, DRY; DFCLT.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for DELPHINIUM%20hansenii%20subsp.%20ewanianum being generated
 


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