Sedum laxum |
Sedum moranii |
|||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
rose-flower stonecrop |
Rogue River stonecrop |
|||||||||||||||||
Habit | Herbs, perennial, cespitose or not, glabrous. | Herbs, perennial, tufted, glabrous proximally, glandular-pubescent distally. | ||||||||||||||||
Stems | root-stocks, ascending, much-branched, bearing rosettes. |
rootstocks, vertical, branched, (glandular), bearing terminal rosettes. |
||||||||||||||||
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. |
recurved when young, simple, 13–30 cm, (glandular-pubescent); leaf blades oblong-oblanceolate, base not spurred; offsets not formed. |
||||||||||||||||
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, glaucous when young, oblong-spatulate, laminar, 14–32 × 9–14 mm, base not spurred, not scarious, apex widely rounded to obtuse or emarginate, with papillose-crenulate appendage, (surfaces of proximal leaves glabrous, of distal leaves glandular-hairy). |
||||||||||||||||
Inflorescences | elongate, paniculate cymes, 12–80-flowered, monochasially 3+-branched; branches not recurved, 2-forked; bracts similar to leaves, smaller. |
cymes (sometimes appearing paniculate), 20–30-flowered, (2–)3-branched; branches not recurved, not forked; bracts similar to leaves, smaller. |
||||||||||||||||
Pedicels | 0.6–6.3 mm. |
1–3.6 mm. |
||||||||||||||||
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-merous; sepals erect, connate basally, green, ovate or lanceolate, equal, 6.5–8.5 × 3–4.5 mm, apex obtuse or acute, (glandular-pubescent); petals erect, (convolute), connate basally, sulphur yellow, oblong-lanceolate, not carinate, 12.5–16 mm, apex aristate, (glandular-pubescent); filaments greenish yellow; anthers yellow; nectar scales white or translucent, narrowly reniform. |
||||||||||||||||
Carpels | erect in fruit, distinct, brown. |
subdivergent in fruit, connate basally, brown. |
||||||||||||||||
2n | = 30. |
|||||||||||||||||
Sedum laxum |
Sedum moranii |
|||||||||||||||||
Phenology | Flowering late May-early Jun. | |||||||||||||||||
Habitat | Serpentine outcrops | |||||||||||||||||
Elevation | 100-800 m (300-2600 ft) | |||||||||||||||||
Distribution |
CA; OR
|
OR |
||||||||||||||||
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.) |
Of conservation concern. Sedum moranii is known only from one canyon off the Rogue River in Josephine County, southwestern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||||||||||
Key |
|
|||||||||||||||||
Source | FNA vol. 8, p. 218. | FNA vol. 8, p. 220. | ||||||||||||||||
Parent taxa | Crassulaceae > Sedum | Crassulaceae > Sedum | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Gormania laxa | Cotyledon glandulifera, Gormania glandulifera | ||||||||||||||||
Name authority | (Britton) A. Berger: in H. G. A. Engler et al., Nat. Pflanzenfam. ed. 2, 18a: 451. (1930) | R. T. Clausen: Bull. Torrey Bot. Club 69: 40. (1942) | ||||||||||||||||
Web links |