Glaucium flavum

Stirp. Austr. Fasc. 2: 133. 1763.
Common names: Yellow horned-poppy
Basionyms: Chelidonium glaucium Linnaeus Sp. Pl. 1: 506. 1753
Synonyms: Glaucium luteum Scopoli
Treatment appears in FNA Volume 3.

Plants biennial or perennial, to 8 dm. Stems branching. Leaves to 30 cm; basal numerous, blade densely pubescent; basal and proximal cauline with blade lyrate, 7-9-lobed; distal with blade ovate, cordate, distinctly clasping stem; margins deeply dentate. Flowers: pedicels stout, to 4 cm; sepals 20-30 mm; petals yellow, sometimes orangish, sometimes with reddish to violet basal spot, obovate, 25-40 mm. Capsules sublinear, mostly distinctly curved, sometimes straight, to 30 cm, glabrous, tuberculate, or scabrous. 2n = 12.

Phenology: Flowering summer.
Habitat: Open sandy shores and flats, waste places, and on ballast
Elevation: 0-200 m


V3 1122-distribution-map.gif

Introduced; Ont., Colo., Conn., Md., Mass., Mich., N.J., N.Y., Okla., Oreg., Pa., R.I., Va., Europe, sw Asia.


Native from the Black Sea and Transcaucasus to coastal southern and western Europe, and also well established as a ruderal in central Europe, Glaucium flavum has spread far beyond that range as a ballast waif and occasional garden escape. It should be expected elsewhere in the flora.

Selected References


Lower Taxa


... more about "Glaucium flavum"
Crantz +
Chelidonium glaucium +
Yellow horned-poppy +
Ont. +, Colo. +, Conn. +, Md. +, Mass. +, Mich. +, N.J. +, N.Y. +, Okla. +, Oreg. +, Pa. +, R.I. +, Va. +, Europe +  and sw Asia. +
0-200 m +
Open sandy shores and flats, waste places, and on ballast +
Flowering summer. +
Stirp. Austr. Fasc. +
Illustrated +  and Introduced +
Glaucium luteum +
Glaucium flavum +
Glaucium +
species +