Sedum laxum |
Sedum hispanicum |
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rose-flower stonecrop |
orpin d'espagne, Spanish stonecrop |
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Habit | Herbs, perennial, cespitose or not, glabrous. | Herbs, annual, tufted, glabrous or scattered glandular-hairy. | ||||||||||||||||
Stems | root-stocks, ascending, much-branched, bearing rosettes. |
erect or ascending, simple or much-branched, (glandular-hairy), not bearing rosettes. |
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Flowering shoots | erect or decumbent, simple or branched, 4–30(–40) cm; leaf blades oblanceolate, spatulate, obovate, or suborbiculate, base not spurred; offsets not formed. |
spreading or erect, simple, 5–15 cm, (glabrous or with scattered glandular hairs); leaf blades linear to oblong, base not spurred; offsets not formed. |
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Leaves | alternate, erect to spreading, sessile; blade green, glaucous or not, not pruinose, oblanceolate, spatulate, or obovate, subterete or somewhat flattened, 10–50 × (4.5–)6–33 mm, base not spurred, not scarious, apex truncate to rounded or obtuse, emarginate or barely notched. |
alternate, ascending, sessile; blade green, sometimes glaucous, linear to oblong, semiterete or ± laminar, 4–20 × 1–2 mm, base not spurred, not scarious, apex obtuse, (surfaces usually glabrous or, rarely, glandular-hairy). |
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Inflorescences | elongate, paniculate cymes, 12–80-flowered, monochasially 3+-branched; branches not recurved, 2-forked; bracts similar to leaves, smaller. |
lax to ± dense cymes, 2–8-flowered or flowers solitary, 2–4-branched; branches not recurved, not forked; bracts similar to leaves, smaller. |
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Pedicels | 0.6–6.3 mm. |
to 0.5 mm. |
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Flowers | 5-merous; sepals erect, (closely appressed to corolla tube), slightly connate basally, pale green, ovate or lanceolate, equal, (2–)2.6–5.1 × 2 mm, apex acute or subacute, (rarely obtuse in var. flavidum); petals basally erect, divergent in distal 1/2, connate basally, pink, pinkish white, or white to yellowish white, lanceolate-oblong, oblanceolate-oblong, or elliptic-oblong, not carinate, 4–11 mm, apex obtuse, shortly mucronate or aristate; filaments white, greenish white, or pink; anthers red, reddish purple, red-brown, or yellow; nectar scales white, yellow, or pink, reniform or transversely oblong. |
5–9-merous; sepals erect, connate basally, green, broadly triangular, equal, ca. 2 × 1 mm, apex acute, (glandular-pubescent); petals spreading, distinct, white with pinkish midvein, lanceolate, not carinate, 4–5(–7) mm, apex narrowly acuminate; filaments white; anthers dark purple; nectar scales white, spatulate-quadrate. |
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Carpels | erect in fruit, distinct, brown. |
stellate-spreading in fruit, connate basally, white or pale pink. |
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2n | = 40. |
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Sedum laxum |
Sedum hispanicum |
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Phenology | Flowering spring–summer. | |||||||||||||||||
Habitat | Rocks and waste places | |||||||||||||||||
Elevation | 0-1000 m (0-3300 ft) | |||||||||||||||||
Distribution |
CA; OR
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MA; MI; NY; UT; VT; ON; QC; s Europe; c Europe (Balkan Peninsula, Caucasus region); sw Asia (n Iran, Lebanon, Palestine, Turkey) [Introduced in North America] |
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Discussion | Varieties 5 (5 in the flora). Sedum laxum is unusual in forming offsets in axils of rosette leaves rather than on a rootstock or creeping stem. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sedum hispanicum has been naturalized in North America since 1880; it is sometimes cultivated. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 218. | FNA vol. 8, p. 212. | ||||||||||||||||
Parent taxa | Crassulaceae > Sedum | Crassulaceae > Sedum | ||||||||||||||||
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Synonyms | Gormania laxa | |||||||||||||||||
Name authority | (Britton) A. Berger: in H. G. A. Engler et al., Nat. Pflanzenfam. ed. 2, 18a: 451. (1930) | Linnaeus: Cent. Pl. I, 12. 1755 , | ||||||||||||||||
Web links |