Sedum lanceolatum |
Sedum albomarginatum |
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lance-leaf stonecrop, spear-leaf stonecrop |
feather river stonecrop |
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Habit | Herbs, perennial, tufted, glabrous. | Herbs, perennial, somewhat tufted, glabrous. | ||||
Stems | rootstocks, decumbent and ascending, branched, (sometimes papillose), bearing terminal rosettes and above ground shoots. |
root-stocks, horizontal, branched, bearing terminal rosettes. |
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Flowering shoots | erect, simple or branched, 3–18 cm; leaf blades elliptic-lanceolate, base short-spurred; offsets not formed. |
erect, mostly simple, 16–25 cm; leaf blades oblanceolate-oblong or oblanceolate-elliptic, base not spurred; offsets not formed. |
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Leaves | (not easily detached), alternate, spreading-erect to erect or ascending, sessile; blade dull gray-green or bluish green, green, or reddish green, often glaucous, lanceolate, elliptic-lanceolate, or elliptic-ovate, subterete, 4.2–13 × 1.5–3.5 mm, base very short-spurred, base of withered blade at times becoming scarious, apex obtuse or obtusely apiculate, (surfaces papillose). |
alternate, spreading to ascending, sessile; blade blue-green with white margins (unique in flora area), glaucous, oblanceolate, oblanceolate-oblong, or spatulate, laminar, (14–)28–67 × (5–)11(–18) mm, base not spurred, not scarious, (margins somewhat erose), apex widely rounded or truncate, sometimes emarginate. |
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Inflorescences | cymes, 5–25-flowered, (1–)3(–6)-branched; branches ascending, spreading to erect, or recurved, forked; bracts similar to leaves. |
elongated, paniculate cymes, 20–55-flowered, 3–15-branched; branches not recurved, forked; bracts similar to leaves, smaller. |
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Pedicels | absent or to 3 mm. |
3–5(–8) mm. |
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Flowers | 5-merous; sepals erect, connate basally, pale green to yellow-green, ovate or lanceolate, equal, 2–5 × 1–2 mm, apex acute or, rarely, obtuse, (often papillose); petals widely spreading from suberect base, distinct, canary to golden yellow, lanceolate, elliptic-lanceolate, or linear-lanceolate, canaliculate, 6–9.2 mm, apex acute to acuminate with minute mucronate appendage; filaments yellow; anthers yellow, sometimes suffused with red; nectar scales deep yellow to yellow-green, obovately square. |
5-merous; sepals erect, connate basally, green or sometimes slightly glaucous, lanceolate, equal, ca. 4.5 × 2.5 mm, apex acute or subacute, (sometimes minutely papillose-ciliate); petals erect proximally, slightly spreading distally, (imbricate), connate basally, yellow, oblanceolate-oblong, often with minute, mucronate appendage, not carinate, ca. 9.5 mm, (distal margins erose), apex acute or obtuse; filaments pale green; anthers yellow; nectar scales white, transversely oblong. |
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Carpels | erect in fruit, basally connate, brown. |
suberect, distinct, brown. |
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2n | = 16. |
= 30. |
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Sedum lanceolatum |
Sedum albomarginatum |
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Phenology | Flowering early summer. | |||||
Habitat | Serpentine outcrops | |||||
Elevation | 300-900 m (1000-3000 ft) | |||||
Distribution |
AK; AZ; CA; CO; ID; MT; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; SK; YT
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CA |
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Discussion | Varieties 2 (2 in the flora). Sedum lanceolatum forms offsets in the axils of rosette leaves. The mature carpels have divergent beaks and narrow lips along the adaxial suture. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Sedum albomarginatum is unusual in having woody roots. It is known from the Feather River Canyon of northern California. The white margins, formed from epicuticular wax, may not be as conspicuous on plants growing in shade. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 206. | FNA vol. 8, p. 220. | ||||
Parent taxa | Crassulaceae > Sedum | Crassulaceae > Sedum | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Torrey: Ann. Lyceum Nat. Hist. New York 2: 205. (1827) | R. T. Clausen: Sedum N. Amer., 424, figs. 120–122. (1975) | ||||
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