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

7. Sedum cockerellii Britton in N. L. Britton and J. N. Rose, New N. Amer. Crassul. 41. 1903.

Cockerellia cockerellii (Britton) Á. Löve & D. Löve

Herbs, perennial, tufted, glabrous. Stems rootstocks, erect, rarely branched, (smooth or papillose), bearing erect shoots and axillary rosettes. Leaves alternate, spreading to ascending, sessile; blade green or yellow-green, sometimes glaucous, obovate or oblong-spatulate, laminar, 9.5-15 × 1.5-3.5 mm, base spurred, not scarious, apex rounded to obtuse, (surfaces papillose). Flowering shoots erect, simple, 5-10 cm, (sometimes papillose distally); leaf blades oblanceolate-elliptic, oblanceolate-oblong, or spatulate, base short-spurred; offsets not formed. Inflorescences 3-parted cymes, (4-)10-27-flowered, 1-3-branched, sometimes monochasially; branches ± arched, spreading, or sometimes recurved, sometimes forked; bracts similar to leaves, smaller. Pedicels 1-3.5 mm. Flowers 5-merous; sepals erect to spreading, distinct basally, yellow-green to yellow, lanceolate-linear or clavate-oblong, unequal, 4.5-12 × 1.4-2.6 mm, apex acute or obtuse, (papillose); petals erect, curving upward distally, distinct, rarely slightly connate, white streaked with pink, lanceolate-elliptic, not carinate, 5-8 mm, apex obtuse, with minute mucronate appendage; filaments white; anthers purple or brown; nectar scales yellow or creamy white, square. Carpels erect in fruit, distinct, pale brown. 2n = 28, 30, 32, (34), 58, 64.

Flowering late summer-early autumn. Pine forests in high mountains, shallow soils, usually in shade; 1600-3200 m; Ariz., N.Mex., Tex.

Mature carpels of Sedum cockerellii have conspicuous, divergent beaks.


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