Burke: Sedum lanceolatum vs. Sedum acre

	Sedum lanceolatum	Sedum acre
	lance-leaved stonecrop	mossy stonecrop
Habit	Carpels 5, erect, distinct, the styles very short, divergent.	Glabrous, mat-forming perennial from rhizomes, the flowering stems up to 1 dm. tall.
Leaves	Leaves alternate, linear-lanceolate and terete to ovate and somewhat flattened, not keeled, 5-20 mm. long, mostly deciduous by flowering time.	Leaves alternate, fleshy, evergreen, ovoid, 3-5 mm. long, sessile.
Flowers	Follicles 5, erect, united at the base, each with a small gland at the base, and tipped by the erect or divergent, tapered style.	Inflorescence of branching cymes; sepals 5, lanceolate, 2-3.5 mm. long, obtuse; petals 5, bright yellow, distinct, lanceolate, spreading, about 5 mm. long; stamens 10, 5 attached to the base of the petals.
Fruits	Erect follicles.	Follicles 5, spreading, each with a small gland at the base, and tipped by the tapered style.

	Sedum lanceolatum	Sedum acre
Identification notes	Leaves of flower stems are alternate, terete and not strongly incurved.
Flowering time	May-August	June-August
Habitat	On rocks or gravel in open, dry areas, from sea level to the alpine.	Disturbed ground at low elevation.
Distribution	Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains in the U.S. and Canada. [WildflowerSearch map] [BONAP county map]	Occurring chiefly west of the Cascades in Washington; British Columbia south to Oregon, east across Canada, and the central, southeastern, and northeastern U.S. to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]
Origin	Native	Introduced from Europe
Conservation status	Not of concern	Not of concern
Sibling taxa	S. acre, S. album, S. brevifolium, S. divergens, S. forsterianum, S. leibergii, S. oreganum, S. rupicola, S. spathulifolium, S. stenopetalum, S. thartii	S. album, S. brevifolium, S. divergens, S. forsterianum, S. lanceolatum, S. leibergii, S. oreganum, S. rupicola, S. spathulifolium, S. stenopetalum, S. thartii
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: 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

Sedum lanceolatum

Sedum acre

lance-leaved stonecrop

mossy stonecrop

Habit

Carpels 5, erect, distinct, the styles very short, divergent.

Glabrous, mat-forming perennial from rhizomes, the flowering stems up to 1 dm. tall.

Leaves

Leaves alternate, linear-lanceolate and terete to ovate and somewhat flattened, not keeled, 5-20 mm. long, mostly deciduous by flowering time.

Leaves alternate, fleshy, evergreen, ovoid, 3-5 mm. long, sessile.

Flowers

Follicles 5, erect, united at the base, each with a small gland at the base, and tipped by the erect or divergent, tapered style.

Inflorescence of branching cymes;

sepals 5, lanceolate, 2-3.5 mm. long, obtuse;

petals 5, bright yellow, distinct, lanceolate, spreading, about 5 mm. long;

stamens 10, 5 attached to the base of the petals.

Fruits

Erect follicles.

Follicles 5, spreading, each with a small gland at the base, and tipped by the tapered style.

Sedum lanceolatum

Sedum acre

Identification notes

Leaves of flower stems are alternate, terete and not strongly incurved.

Flowering time

May-August

June-August

Habitat

On rocks or gravel in open, dry areas, from sea level to the alpine.

Disturbed ground at low elevation.

Distribution

Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains in the U.S. and Canada.

[WildflowerSearch map]

[BONAP county map]

Occurring chiefly west of the Cascades in Washington; British Columbia south to Oregon, east across Canada, and the central, southeastern, and northeastern U.S. to the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]

Origin

Native

Introduced from Europe

Conservation status

Not of concern

Sibling taxa