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FNA | Family List | FNA Vol. 8 | Crassulaceae | Sedum

17. Sedum nuttallii Torrey & E. James ex Eaton, Man. Bot. (ed. 5). 388. 1829.

Yellow stonecrop

Herbs, annual, not tufted, glabrous. Stems erect or decumbent, simple or branched, not bearing rosettes. Leaves alternate, widely divergent, sessile; blade pale or bluish green, not glaucous, narrowly lanceolate-elliptic or oblong, subterete to, rarely, globular, 3-6 × 1.5-2 mm, base short-spurred, not scarious, apex obtuse. Flowering shoots erect, simple or branched, 2.5-11 cm; leaf blades lanceolate-elliptic or oblong, base short-spurred; offsets not formed. Inflorescences cymes, 20-60(-100)-flowered, 1-3-branched; branches ± erect to spreading, sometimes slightly recurved, usually not forked, sometimes 1-2-forked; bracts similar to leaves. Pedicels absent or to 1 mm. Flowers 5-merous; sepals erect, distinct, yellow-green, lanceolate or lanceolate-oblong, unequal, 0.6-3 × 0.4-1.5 mm, (base short-spurred), apex acute; petals spreading, distinct, yellow, elliptic-oblong, slightly cucullate, 2-4 mm, apex mucronate; filaments yellow; anthers yellow; nectar scales yellow or translucent, stipitate-reniform, subquadrate, or obovate. Carpels widely spreading in fruit, connate basally, straw-yellow. 2n = 20.

Flowering spring-summer. Open areas, shallow soil, commonly over granite or sandstone; 200-400 m; Ark., Kans., La., Mo., Okla., Tex.

Until recently, Sedum nuttallii was thought to have been published first in 1833 (not 1829), a year after S. nuttallianum Rafinesque; consequently the latter name has been applied incorrectly to this species.


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