Burke: Geum macrophyllum vs. Geum urbanum

	Geum macrophyllum	Geum urbanum
	bigleaf avens, large-leaved avens	herb-bennet
Habit	Herbaceous perennial from a short rhizome, the 1-several pubescent stems 3-7 dm. tall.
Leaves	Basal leaves several, the blades lyrate-pinnatifid, up to 3 dm. long; leaflets 9-23, triangular-ovate to cordate, the terminal one much the largest, up to 15 cm. wide; cauline leaves 2-5, with leaf-like stipules.
Flowers	Flowers several in an open, asymmetrical inflorescence; calyx saucer-shaped, the 5 lobes 4-5 mm. long, reflexed, alternating with 5 simple bracteoles; petals 5, yellow, 4-6 mm. long; stamens and pistils numerous.
Fruits	Achenes compressed, elliptic, 3 mm. long, the style bent and divided at mid-length, the lower segment 4 mm. long, reddish, hooked at the tip, the upper segment 1-1.5 mm. long, yellowish.

	Geum macrophyllum	Geum urbanum
Flowering time	April-August	May-September
Habitat	Common in moist woods and meadows from sea level to subalpine.	Disturbed areas in including, roadsides, wastelots, and fields.
Distribution	Widely distributed on both sides of the Cascades crest in Washington; Alaska to Baja California, east to the Great Plains and east across Canada to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	In scattered locations on both sides of the Cascades crest in Washington; Washington to Oregon, east to Idaho and Utah. [WildflowerSearch map] [BONAP county map]
Origin	Native	Introduced from Eurasia
Conservation status	Not of concern	Not of concern
Sibling taxa	G. aleppicum, G. rivale, G. rossii, G. triflorum, G. urbanum	G. aleppicum, G. macrophyllum, G. rivale, G. rossii, G. triflorum
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

Geum macrophyllum

Geum urbanum

bigleaf avens, large-leaved avens

herb-bennet

Habit

Herbaceous perennial from a short rhizome, the 1-several pubescent stems 3-7 dm. tall.

Leaves

Basal leaves several, the blades lyrate-pinnatifid, up to 3 dm. long;

leaflets 9-23, triangular-ovate to cordate, the terminal one much the largest, up to 15 cm. wide;

cauline leaves 2-5, with leaf-like stipules.

Flowers

Flowers several in an open, asymmetrical inflorescence;

calyx saucer-shaped, the 5 lobes 4-5 mm. long, reflexed, alternating with 5 simple bracteoles;

petals 5, yellow, 4-6 mm. long;

stamens and pistils numerous.

Fruits

Achenes compressed, elliptic, 3 mm. long, the style bent and divided at mid-length, the lower segment 4 mm. long, reddish, hooked at the tip, the upper segment 1-1.5 mm. long, yellowish.

Geum macrophyllum

Geum urbanum

Flowering time

April-August

May-September

Habitat

Common in moist woods and meadows from sea level to subalpine.

Disturbed areas in including, roadsides, wastelots, and fields.

Distribution

Widely distributed on both sides of the Cascades crest in Washington; Alaska to Baja California, east to the Great Plains and east across Canada to the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]