Page authors: Don Knoke, David Giblin
Crataegus monogyna var. monogyna
common hawthorn, English hawthorn, one-seeded hawthorn
WTU specimens
Other herbaria

Distribution: Occurring chiefly west of the Cascades crest in Washington, less common in southeast corner of the State; Alaska south to California, in other scattered locations in western North America, and widely distributed in eastern North America.

Habitat: Forest edges, clearings, fields, wastelots, and other disturbed areas at low elevations. Seeds readily dispersed by birds.

Flowers: April-June

Origin: Introduced from Eurasia and North Africa

Conservation Status: Not of concern

Description:
General:

Glabrous, thorny, deciduous small shrub or tree, 2-10 m. tall. Thorns continue to grow as short thorn-tipped branches with leaves budding from the sides of the thorns.

Leaves:

Leaves ovate, deeply 3-lobed more than halfway to the midrib, 2.5-5 cm. long and nearly as broad.

Flowers:

Inflorescence a broad, dense, flat-topped cluster; flowers 8-15 mm. wide, the petals white; style 1.

Fruits:

Fruit a crimson berry, globose, 7-10 mm. in diameter, with single large seed.

Accepted Name:
Crataegus monogyna Jacq. var. monogyna
Publication: Fl. Austriac. 3: 50, pl. 292, f.1. 1775.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Crataegus monogyna var. monogyna in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Crataegus monogyna var. monogyna checklist entry.

E-Flora BC: Crataegus monogyna var. monogyna atlas page.

CalPhotos: Crataegus monogyna var. monogyna photos.

USDA Plants: Crataegus monogyna var. monogyna information.

16 photographs:
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