Sedum stenopetalum |
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narrow leaf stonecrop, narrow-petal stonecrop, worm-leaf stonecrop |
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Habit | Herbs, annual, biennial, or weakly perennial, tufted or not, glabrous. | ||||
Stems | decumbent, branched, bearing terminal rosettes. |
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Flowering shoots | erect, branched, 10–43 cm; leaf blades linear, base with scarious spurs; offsets rosettes, produced from axils of leaves and bracts. |
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Leaves | alternate, spreading to erect, sessile; blade green, not glaucous, linear to elliptic-oblong (subulate when dry), subterete, 4.3–13.8 × 1.4–2.7 mm, base (persistent), spurred (spur simple, small), scarious, apex acute, (surfaces sometimes papillose marginally). |
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Inflorescences | solitary flowers or cymes, 9–15(–25)-flowered, mostly 3-branched; branches slightly recurved, not forked; bracts linear-lanceolate, smaller than leaves, base spurred. |
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Pedicels | absent or to 0.5 mm. |
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Flowers | 5-merous; sepals erect, distinct, pale green or yellow-green, lanceolate or ovate, equal, 2–3.7 × 0.9–1.7 mm, apex acute or long-acuminate; petals stellately spreading, distinct, deep yellow with green to brown dorsal keel to almost white, lanceolate or elliptic, slightly carinate, 5.4–8 mm, apex obtuse, acute, or long-acuminate, sometimes with aristate appendage; filaments yellow; anthers yellow; nectar scales greenish yellow or yellowish white, reniform-subquadrate or square. |
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Carpels | divergent in fruit, shortly connate, pale green, yellow-green, or brown. |
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2n | = 50–54, 58, 62–70, 63–64. |
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Sedum stenopetalum |
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Distribution |
CA; ID; MT; OR; WA; WY; AB; BC
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Discussion | Varieties 2 (2 in the flora). Mature follicles of Sedum stenopetalum are finely papillose, with prominent lips along the adaxial suture. Petal number can range from three to eight. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 209. | ||||
Parent taxa | Crassulaceae > Sedum | ||||
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Synonyms | Amerosedum stenopetalum | ||||
Name authority | Pursh: Fl. Amer. Sept. 1: 324. (1813) | ||||
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