Burke: Crataegus douglasii vs. Crataegus chrysocarpa

	Crataegus douglasii	Crataegus chrysocarpa
	black hawthorn, Douglas's hawthorn	fireberry hawthorn
Habit	Large shrubs or small trees, 1-6 m. tall, armed with stout, straight thorns 1-2 cm. long.
Leaves	Leaf blades obovate, tapered to the petiole, 3-6 cm. long and nearly as broad, weakly lobed, pubescent to glabrous on both surfaces.
Flowers	Flowers few in the leaf axils or terminal; calyx bell-shaped, the 5 lobes triangular, entire, reflexed, 1.5-2.5 mm. long; petals 5, white, orbicular, 5-7 mm. long; stamens 10, styles 5.
Fruits	Berry blackish, glabrous, about 1 cm. long.

	Crataegus douglasii	Crataegus chrysocarpa
Flowering time	May-June	May-June
Habitat	Thickets, open forests, forest edges, and riparian zones, from lowlands to middle elevations.	Thickets, dry slopes, shrub-steppe, riparian zones, forest openings.
Distribution	Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Saskatchewan, Idaho and Montana, also in the Great Lakes region. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	C. castlegarensis, C. chrysocarpa, C. ×cogswellii, C. gaylussacia, C. laevigata, C. macracantha, C. monogyna, C. okanaganensis, C. okennonii, C. phaenopyrum, C. phippsii, C. tenuior	C. castlegarensis, C. ×cogswellii, C. douglasii, C. gaylussacia, C. laevigata, C. macracantha, C. monogyna, C. okanaganensis, C. okennonii, C. phaenopyrum, C. phippsii, C. tenuior
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Crataegus douglasii

Crataegus chrysocarpa

black hawthorn, Douglas's hawthorn

fireberry hawthorn

Habit

Large shrubs or small trees, 1-6 m. tall, armed with stout, straight thorns 1-2 cm. long.

Leaves

Leaf blades obovate, tapered to the petiole, 3-6 cm. long and nearly as broad, weakly lobed, pubescent to glabrous on both surfaces.

Flowers

Flowers few in the leaf axils or terminal;

calyx bell-shaped, the 5 lobes triangular, entire, reflexed, 1.5-2.5 mm. long;

petals 5, white, orbicular, 5-7 mm. long;

stamens 10, styles 5.

Fruits

Berry blackish, glabrous, about 1 cm. long.

Crataegus douglasii

Crataegus chrysocarpa

Flowering time

May-June

Habitat

Thickets, open forests, forest edges, and riparian zones, from lowlands to middle elevations.

Thickets, dry slopes, shrub-steppe, riparian zones, forest openings.

Distribution

Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Saskatchewan, Idaho and Montana, also in the Great Lakes region.

[WildflowerSearch map]

[BONAP county map]