Burke: Geum rossii var. depressum vs. Geum rossii

	Geum rossii var. depressum	Geum rossii
		Ross's avens
Habit	Herbaceous perennial from thick, scaly rhizomes, forming dense clumps up to 3 dm. broad, the simple, pubescent flowering stems 8-20 cm. tall.	Herbaceous perennial from thick, scaly rhizomes, forming dense clumps up to 3 dm. broad, the simple, pubescent flowering stems 8-20 cm. tall.
Leaves	Basal leaves numerous, the blades oblong, 4-10 cm. long, interruptedly pinnate or pinnatifid, the main segments entire and linear (the lower ones) or elliptic and toothed; cauline leaves several, alternate, much reduced.	Basal leaves numerous, the blades oblong, 4-10 cm. long, interruptedly pinnate or pinnatifid, the main segments entire and linear (the lower ones) or elliptic and toothed; cauline leaves several, alternate, much reduced.
Flowers	Flowering stems single- or few-flowered; calyx funnel-shaped, purplish, the 5 lobes 6-10 mm. long, the 5 bracteoles 3-4 mm. long; petals 5, spreading, obovate, yellow, blunt-tipped, 6-12 mm. long; stamens 50-70; pistils few to many on a short columnar receptacle.	Flowering stems single- or few-flowered; calyx funnel-shaped, purplish, the 5 lobes 6-10 mm. long, the 5 bracteoles 3-4 mm. long; petals 5, spreading, obovate, yellow, blunt-tipped, 6-12 mm. long; stamens 50-70; pistils few to many on a short columnar receptacle.
Fruits	Achenes lanceolate, 2.5-4 mm. long, hairy, the styles persistent, straight, glabrous, about as long as the achenes.	Achenes lanceolate, 2.5-4 mm. long, hairy, the styles persistent, straight, glabrous, about as long as the achenes.

	Geum rossii var. depressum	Geum rossii
Flowering time	June- August	June- August
Habitat	Arctic tundra, high gravelly meadows and scree slopes.	Arctic tundra, high gravelly meadows and scree slopes.
Distribution	Occurring east of the Cascades crest in the Wenatchee Mountains in Washington; Alaska to California, east to the Rocky Mountains, and eastward across northern Canada to Greenland; also in Far East Russia. [BONAP county map]	Occurring east of the Cascades crest in the Wenatchee Mountains in Washington; Alaska to California, east to the Rocky Mountains, and eastward across northern Canada to Greenland; also in Far East Russia. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Endangered in Washington (WANHP)	Endangered in Washington (WANHP)
Sibling taxa		G. aleppicum, G. macrophyllum, G. rivale, G. triflorum, G. urbanum
Web links	Local floras: BC, 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	Local floras: BC, 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 rossii

Ross's avens

Habit

Herbaceous perennial from thick, scaly rhizomes, forming dense clumps up to 3 dm. broad, the simple, pubescent flowering stems 8-20 cm. tall.

Leaves

Basal leaves numerous, the blades oblong, 4-10 cm. long, interruptedly pinnate or pinnatifid, the main segments entire and linear (the lower ones) or elliptic and toothed;

cauline leaves several, alternate, much reduced.

Basal leaves numerous, the blades oblong, 4-10 cm. long, interruptedly pinnate or pinnatifid, the main segments entire and linear (the lower ones) or elliptic and toothed;

cauline leaves several, alternate, much reduced.

Flowers

Flowering stems single- or few-flowered;

calyx funnel-shaped, purplish, the 5 lobes 6-10 mm. long, the 5 bracteoles 3-4 mm. long;

petals 5, spreading, obovate, yellow, blunt-tipped, 6-12 mm. long;

stamens 50-70;

pistils few to many on a short columnar receptacle.

Flowering stems single- or few-flowered;

calyx funnel-shaped, purplish, the 5 lobes 6-10 mm. long, the 5 bracteoles 3-4 mm. long;

petals 5, spreading, obovate, yellow, blunt-tipped, 6-12 mm. long;

stamens 50-70;

pistils few to many on a short columnar receptacle.

Fruits

Achenes lanceolate, 2.5-4 mm. long, hairy, the styles persistent, straight, glabrous, about as long as the achenes.

Geum rossii

Flowering time

June- August

Habitat

Arctic tundra, high gravelly meadows and scree slopes.

Distribution

Occurring east of the Cascades crest in the Wenatchee Mountains in Washington; Alaska to California, east to the Rocky Mountains, and eastward across northern Canada to Greenland; also in Far East Russia.

[BONAP county map]