Adonis vernalis

Linnaeus

Sp. Pl. 1: 547. 1753.

Common names: Spring adonis ox-eye
Introduced
Treatment appears in FNA Volume 3. Treatment on page 187.

Herbs, perennial, stout-rhizomatous. Stems 1-4, 5-35 cm at anthesis (10-40 cm at fruiting time). Leaves: basal leaves scalelike, 1cm, sessile; proximal cauline leaves with sheathlike petiole base, distal leaves short-petiolate to sessile; leaf-blade 1-2-pinnatisect. Flowers 4-8 cm diam.; sepals appressed to petals, ovate-elliptic to obovate, margins and abaxial surface villous, apex slightly crenulate to ±erose; petals 10-20, spreading, yellow, without basal blotch, plane, 25-35 mm, 1.5 times length of calyx, apex erose or irregularly crenulate; stamens ca. 80; anthers yellow; pistils 40-50. Heads of achenes globose to ovoid, 15-20 × 12-15 mm; pedicels hidden among dense leaves; achenes pubescent, 3.5-5.5 mm, transverse flange absent, basal tooth absent, adaxial margin very short (1 mm), straight, abaxial margin strongly gibbous; beak strongly recurved against abaxial surface, 0.5-1 mm.


Phenology: Flowering spring (Apr–May).
Habitat: Roadsides and sites adjacent to gardens

Distribution

V3 934-distribution-map.gif

Introduced; N.Y., native to Eurasia

Discussion

Adonis vernalis occasionally escapes from cultivation as an ornamental. It is much less frequently encountered in the flora than the other two species of Adonis.

Selected References

None.

Lower Taxa

None.

"timeslengthofcalyx" is not declared as a valid unit of measurement for this property.

... more about "Adonis vernalis"
Bruce D. Parfitt +
Linnaeus +
1 cm10 mm <br />0.01 m <br /> (?) +
cuneate +, truncate +  and cordate +
curved +  and straight +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
globose;cylindric +
Spring adonis +  and ox-eye +
short-petiolate +  and sessile +
N.Y. +  and native to Eurasia +
sessile +  and pedicellate +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
showy +  and inconspicuous +
sessile +  and aggregate +
Roadsides and sites adjacent to gardens +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
globose;ovoid +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
axillary +  and terminal +
compound +  and simple +
whorled +, opposite +  and alternate +
cauline +  and basal +
palmate +  and pinnate +
with occasional tooth +  and entire +
incised;toothed;incised;toothed;entire +
distinct +
conspicuous +
reduced +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering spring (Apr–May). +
40 +  and 50 +
not arillate +  and stalked +
green;colorless +
not persistent +
distinct +
3 +  and 6 +
ovate-elliptic +  and obovate +
0.6 cm6 mm <br />0.006 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
W1 +  and Introduced +
1 +  and 4 +
5 cm50 mm <br />0.05 m <br /> (35 cm350 mm <br />0.35 m <br />) +
persistent +
Adonis vernalis +
species +
occasional +
herbaceous +  and woody +