Sedum oregonense |
Sedum debile |
|
---|---|---|
cream stonecrop, creamy stonecrop |
opposite stonecrop, orpine stonecrop, weak-stem stonecrop |
|
Habit | Herbs, perennial, cespitose or not, glabrous. | Herbs, perennial, tufted, glabrous. |
Stems | rhizomes, horizontal, much-branched, bearing rosettes. |
decumbent, branched, bearing erect rosettes. |
Flowering shoots | erect, simple, (6–)10–28 cm; leaf blades suborbiculate or obovate, base not spurred; offsets not formed. |
erect, decumbent, or ascending, simple, 3–12 cm; leaf blades ovate-elliptic, base not spurred; offsets not formed. |
Leaves | alternate, ascending to spreading, sessile to subsessile; blade green, glaucous, not strongly pruinose, obovate or oblanceolate, subterete, 10–36 × 5–16 mm, base not spurred, not scarious, apex emarginate to retuse. |
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). |
Inflorescences | panicles, 10–120-flowered, 3–20-branched; branches not recurved, dichotomously forked; bracts similar to leaves, smaller. |
cymes, 2–7-flowered, 2-branched; branches not recurved, forked; bracts similar to leaves, smaller. |
Pedicels | 2–5 mm. |
to 1.2 mm. |
Flowers | 5-merous; sepals (persistent, closely appressed to corolla tube), erect, connate basally, greenish, ovate, equal, 3.2–3.5 × 1–3 mm, apex subacute; petals (persistent until fruiting), erect basally, divergent apically, connate basally, creamy white, yellowish white, or pale yellow, elliptic-oblong or oblanceolate-oblong, cucullate, 5–9(–11.5) mm, apex abruptly pointed; filaments pale yellow; anthers yellow; nectar scales white or yellow, subreniform. |
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. |
Carpels | erect in fruit, distinct, brown, (strongly 5-veined). |
erect or ascending in fruit, connate basally, straw colored with purple stripes. |
2n | = 90. |
= 14–18. |
Sedum oregonense |
Sedum debile |
|
Phenology | Flowering spring–summer. | Flowering summer. |
Habitat | Gravel, mats of Selaginella or moss on rocky slopes and ledges, crevices of cliffs | Open, rocky places |
Elevation | 900-2200 m (3000-7200 ft) | 1500-3500 m (4900-11500 ft) |
Distribution |
CA; OR
|
ID; MT; NM; NV; OR; UT; WY
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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.) |
|
Source | FNA vol. 8, p. 220. | FNA vol. 8, p. 211. |
Parent taxa | Crassulaceae > Sedum | Crassulaceae > Sedum |
Sibling taxa | ||
Synonyms | Cotyledon oregonensis | Gormania debilis |
Name authority | (S. Watson) M. Peck: Man. Higher Pl. Oregon, 361. (1941) | S. Watson: Botany (Fortieth Parallel), 102. (1871) |
Web links |