Difference between revisions of "Sedum oreganum"
in J. Torrey and A. Gray, Fl. N. Amer. 1: 559. 1840,.
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Revision as of 23:02, 16 December 2019
Herbs, perennial, multi-stemmed from base, glabrous. Stems rootstocks and decumbent branches, (stout), bearing terminal rosettes. Leaves alternate, spreading, sessile; blade lustrous light green, not glaucous, spatulate or cuneate, laminar (thickest near apex), 7–12 × 4.4–9 mm, base short-spurred, not scarious, apex broadly rounded or truncate. Flowering shoots erect, simple or branched, 8–13 cm; leaf blades spatulate or cuneate, base short-spurred; offsets not formed. Inflorescences dense corymbs, 5–10-flowered, 3-branched; branches spreading to erect, primary branch dichotomously forked; bracts spatulate or oblanceolate, 5–8 mm, base spurred. Pedicels absent or 0.4–3+ mm. Flowers 5-merous; sepals erect, connate basally, green, ovate-lanceolate, equal, ca. 3.5 × 2 mm, apex acuminate or acute; petals erect or erect basally and divergent distally, connate basally, yellow, narrowly lanceolate, carinate, ca. 10.5 mm, apex aristate; filaments yellowish or greenish; anthers yellow; nectar scales yellow, subquadrate to spatulate or oblong. Carpels erect in fruit, connate basally, light brown or yellow. 2n = 24.
Distribution
w North America.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
| 1 | Nectar scales subquadrate to spatulate, 0.4-0.5 mm; carpels 4.7-5.1 mm. | Sedum oreganum var. oreganum |
| 1 | Nectar scales oblong, 0.5 mm; carpels 3.7-4.5 mm. | Sedum oreganum var. tenue |