UW Burke Herbarium species comparison

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Crataegus monogyna

Crataegus macracantha

English hawthorn, one-seed hawthorn

large-thorned hawthorn, western large-thorned hawthorn

Crataegus monogyna

Crataegus macracantha
Flowering time April-June May-July
Habitat Roadsides, fields, pastures, meadows, thickets, and forest edge and understory at low elevations, often associated with disturbance. Seeds readily dispersed by birds. Thickets, riparian zones, and pastures.
Distribution
Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to California, east to Montana, also in the Great Lakes region and eastern North America.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; southern British Columbia to northeastern Oregon, east to the Rocky Mountains, and further east across the U.S. and Canada to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Europe Native
Conservation status Not of concern Not of concern
Sibling taxa
C. castlegarensis, C. chrysocarpa, C. ×cogswellii, C. douglasii, C. gaylussacia, C. laevigata, C. macracantha, C. okanaganensis, C. okennonii, C. phaenopyrum, C. phippsii, C. tenuior
C. castlegarensis, C. chrysocarpa, C. ×cogswellii, C. douglasii, C. gaylussacia, C. laevigata, C. monogyna, C. okanaganensis, C. okennonii, C. phaenopyrum, C. phippsii, C. tenuior
Subordinate taxa
C. monogyna var. monogyna
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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