Stylophorum diphyllum

(Michaux) Nuttall

Gen. N. Amer. Pl. 2: 7. 1818. 1818

Common names: Celandine-poppy mock poppy yellow-poppy wood-poppy
EndemicIllustrated
Basionyms: Chelidonium diphyllum Michaux Fl. Bor.-Amer. 1: 309. 1803
Synonyms: Stylophorum ohiense Sprengel
Treatment appears in FNA Volume 3.

Plants to 5 dm, downy. Stems simple or branching. Leaves to 5 dm; petiole to 2 dm; blade pale abaxially, deeply 5-7-lobed; margins irregularly dentate or crenate. Flowers: pedicels 25-80 mm; sepals ca. 15 mm; petals yellow, obovate, 2-3 cm wide; style 3-6 mm. Capsules ellipsoid, 20-35 mm, pubescent. Seeds pale brown, reticulate-pitted. 2n = 20 (cult.).


Phenology: Flowering spring.
Habitat: Moist deciduous woods, thickets, and cedar barrens, often on slopes, occasionally in fields or on shaded dunes, in loam or sand
Elevation: 100-600 m

Distribution

V3 721-distribution-map.gif

Ont., Ala., Ark., Ill., Ind., Ky., Mich., Mo., Ohio, Tenn., Va., W.Va.

Discussion

Vegetatively, this native species closely resembles the more frequent and widespread Chelidonium majus, introduced from Eurasia. Various authors have reported Stylophorum diphyllum from western Pennsylvania, but W. E. Buker and S. A. Thompson (1986) could not confirm its past or current native presence there.

Selected References

None.

Lower Taxa

None.

... more about "Stylophorum diphyllum"
(Michaux) Nuttall +
Chelidonium diphyllum +
Celandine-poppy +, mock poppy +, yellow-poppy +  and wood-poppy +
Ont. +, Ala. +, Ark. +, Ill. +, Ind. +, Ky. +, Mich. +, Mo. +, Ohio +, Tenn. +, Va. +  and W.Va. +
100-600 m +
Moist deciduous woods, thickets, and cedar barrens, often on slopes, occasionally in fields or on shaded dunes, in loam or sand +
Flowering spring. +
Gen. N. Amer. Pl. +
Endemic +  and Illustrated +
Stylophorum ohiense +
Stylophorum diphyllum +
Stylophorum +
species +