Eranthis hyemalis

(Linnaeus) Salisbury

Trans. Linn. Soc. London 8: 304. 1807.

Common names: Winter-aconite
IntroducedIllustrated
Basionym: Helleborus hyemalis Linnaeus Sp. Pl. 1: 557. 1753
Synonyms: Cammarum hyemale (Linnaeus) Greene Eranthis cilicicus Schott & Kotschy Eranthis ×tubergenii Hoog
Treatment appears in FNA Volume 3. Treatment on page 183.
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Leaves basal, 3–10 cm. Leaf-blade 3–5 cm diam.; lateral leaflets 2-parted, segments 2–3-cleft, terminal leaflet 3-cleft. Inflorescences: involucral-bracts 2 cm. Flowers cupshaped, 20–45 mm diam.; sepals 15–22 × 5–11mm; petals shorter than stamens, abaxial lip ca. 2–2.5 times length of adaxial lip. Follicles: body 8–14 mm; stipe ca. 3 mm. Seeds ca. 2 mm.


Phenology: Flowering late winter–early spring.
Habitat: Mostly moist places

Distribution

V3 500-distribution-map.gif

Introduced; Ont., D.C., Ill., Ohio, N.J., Pa., native to Eurasia

Discussion

Eranthis hyemalis is a garden plant that sometimes persists after cultivation and occasionally becomes established locally. It has been reported for Newfoundland but it is probably not established there.

Eranthis cilicicus from southeastern Turkey, usually with more leaflets and smaller flowers, may be distinguished from E. hyemalis in gardens but not in the wild. Hybrids between the two species are referred to as E. ×tubergenii.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Eranthis hyemalis"
2-2.5 times length of adaxial lip +
Bruce D. Parfitt +
(Linnaeus) Salisbury +
cuneate +, truncate +  and cordate +
Helleborus hyemalis +
curved +  and straight +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
globose;cylindric +
Winter-aconite +
Ont. +, D.C. +, Ill. +, Ohio +, N.J. +, Pa. +  and native to Eurasia +
sessile +  and pedicellate +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
showy +  and inconspicuous +
cup-shaped +
stipitate +  and aggregate +
oblong-lanceolate +
Mostly moist places +
axillary +  and terminal +
2 cm20 mm <br />0.02 m <br /> (?) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
whorled +, opposite +  and alternate +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
unlobed +  and 3-lobed +
palmate +  and pinnate +
dentate +  and cleft +
incised;toothed;incised;toothed;entire +
distinct +
conspicuous +
reduced +
4 cm40 mm <br />0.04 m <br /> (?) +
Flowering late winter–early spring. +
3 +  and 9 +
Trans. Linn. Soc. London +
1 cm10 mm <br />0.01 m <br /> (?) +
not arillate +  and stalked +
olive-brown +
flattened +, ovoid +  and ellipsoid +
2 cm20 mm <br />0.02 m <br /> (?) +
subglobose +
not persistent +
distinct +
3 +  and 6 +
elliptic +, obovate +  and plane +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Introduced +  and Illustrated +
3 cm30 mm <br />0.03 m <br /> (?) +
persistent +
Cammarum hyemale +, Eranthis cilicicus +  and Eranthis ×tubergenii +
Eranthis hyemalis +
Eranthis +
species +
conspicuous +
herbaceous +  and woody +