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.