Sedum leibergii |
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Leiberg stonecrop, Leiberg's stonecrop |
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Habit | Herbs, biennial, erect, glabrous. |
Stems | rootstocks, horizontal, simple, bearing basal rosettes (axillary shoots with subterranean, white stems that detach easily and bear terminal rosettes of colorless leaves). |
Flowering shoots | erect, simple, (5–)11(–18) cm; leaf blades ovate or elliptic, base not spurred; offsets not formed. |
Leaves | alternate, spreading, outermost ones petiolate (petiole 4–5 mm); blade green or greenish white, not glaucous, oblanceolate, obovate, or narrowly spatulate, laminar, 2–16 × 1.4–3.2 mm, base not spurred, not scarious, apex blunt, (surfaces papillose). |
Inflorescences | cymes, 5–60-flowered, 3–6-branched; branches often strongly recurved, each 1 or 2 times dichotomously forked; bracts similar to leaves, smaller. |
Pedicels | to 0.3 mm. |
Flowers | (5–)6(–7)-merous; sepals erect, slightly connate basally, green, ovate, equal, 1.5–2 × 0.7–1.1 mm, apex acute; petals spreading, distinct nearly to base, canary yellow, keel green or dark red, lanceolate to oblong, carinate, 4–6 mm, apex subobtuse to acute; filaments yellow; anthers yellow; nectar scales deep yellow, subquadrate. |
Carpels | stellately spreading in fruit, connate basally, brown. |
2n | = 16. |
Sedum leibergii |
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Phenology | Flowering spring–summer. |
Habitat | Open or largely bare areas, basalt or limestone, rocky hillsides, cliffs |
Elevation | 50-1200 m (200-3900 ft) |
Distribution |
ID; OR; WA
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Discussion | Variation in the number of floral parts of Sedum leibergii (5–7-merous) is unique in North American sedums. It has tiny rosettes of lax, long-spatulate basal leaves that mostly have shriveled by anthesis. Sedum borschii, which is often confused with S. leibergii, has primary rosettes, prominent at anthesis, that have obovate or elliptic leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 209. |
Parent taxa | Crassulaceae > Sedum |
Sibling taxa | |
Synonyms | S. divaricatum, Amerosedum leibergii |
Name authority | Britton: in N. L. Britton et al., N. Amer. Fl. 22: 73. (1905) |
Web links |