Sedum debile |
Sedum oblanceolatum |
|
---|---|---|
opposite stonecrop, orpine stonecrop, weak-stem stonecrop |
Applegate stonecrop, oblong-leaf stonecrop |
|
Habit | Herbs, perennial, tufted, glabrous. | Herbs, perennial, cespitose, glabrous. |
Stems | decumbent, branched, bearing erect rosettes. |
rootstocks, erect, branched from base, bearing rosettes. |
Flowering shoots | erect, decumbent, or ascending, simple, 3–12 cm; leaf blades ovate-elliptic, base not spurred; offsets not formed. |
erect, simple, 6–15 cm; leaf blades oblanceolate-oblong, base short-spurred; offsets not formed. |
Leaves | opposite and decussate (rarely alternate), ascending, sessile; blade pale green, speckled with pink, sometimes pink or red, glaucous, usually elliptic, oblanceolate, or obovate, sometimes ovate-elliptic, subterete, ± globular, 4.2–7.2 × 2.8–4.3 mm, base not spurred, (clasping), not scarious, apex widely rounded or sometimes weakly emarginate, (surfaces minutely papillose). |
alternate, erect, sessile; blade green, appearing whitish because of pruinose covering, margins green, not white, strongly pruinose, not glaucous, narrowly obovate, laminar, 7–38 × 5–9 mm, base spurred, not scarious, apex usually obtuse to truncate, sometimes emarginate. |
Inflorescences | cymes, 2–7-flowered, 2-branched; branches not recurved, forked; bracts similar to leaves, smaller. |
dense, paniculate cymes, 30–60-flowered, 7–9-branched; branches not recurved, somewhat forked; bracts similar to leaves, smaller. |
Pedicels | to 1.2 mm. |
3–5 mm. |
Flowers | 5-merous; sepals erect, connate basally, pale green, glaucous, lanceolate, equal, 2–4.2 × 1.3–2 mm, apex obtuse, (papillose); petals basally erect, distally spreading, connate basally, yellow, elliptic-lanceolate, slightly carinate, 6–9 mm, apex obtuse with mucronate appendage; filaments yellow; anthers yellow, (sometimes compressed and winged); nectar scales yellow, orange-red, or salmon-pink, reniform to square. |
5-merous; sepals erect, connate basally, green, appearing blue-green, glaucous, lanceolate-oblong, equal, 4–7 × 1.5–3.2 mm, apex acute, (papillose); petals erect, connate basally, creamy white, oblong, not carinate, 8.5–11.5 mm, apex acute, mucronate; filaments white, becoming reddish; anthers yellow; nectar scales yellow, transversely oblong. |
Carpels | erect or ascending in fruit, connate basally, straw colored with purple stripes. |
erect in fruit, connate basally, brown. |
2n | = 14–18. |
= 30. |
Sedum debile |
Sedum oblanceolatum |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Open, rocky places | Rocky slopes, in crevices, edges of rocks |
Elevation | 1500-3500 m (4900-11500 ft) | 400-1600 m (1300-5200 ft) |
Distribution |
ID; MT; NM; NV; OR; UT; WY
|
CA; OR |
Discussion | The axillary, almost globular, rosettes of Sedum debile are the primary mode of propagation in this species (R. T. Clausen 1975). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sedum oblanceolatum is restricted to the upper Klamath and Applegate river basins in Jackson County, Oregon, and Siskiyou County, California. Represented by relatively few individual plants, it occurs on a wide range of substrates including phyllite-schist, schist, metavolcanics, metasedimentary, as well as ultramafics like serpentine, soapstone, and peridotite. It is of conservation concern in California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 211. | FNA vol. 8, p. 219. |
Parent taxa | Crassulaceae > Sedum | Crassulaceae > Sedum |
Sibling taxa | ||
Synonyms | Gormania debilis | |
Name authority | S. Watson: Botany (Fortieth Parallel), 102. (1871) | R. T. Clausen: Sedum N. Amer., 404, figs. 113, 114. (1975) |
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