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

76. Sedum triactina A. Berger in Engler & Prantl, Nat. Pflanzenfam., ed. 2. 18a: 460. 1930.

三芒景天 san mang jing tian

Sedum triactina

Credit: Harvard University Herbaria

Triactina verticillata J. D. Hooker & Thomson, J. Linn. Soc. 2: 103. 1858; Sedum verticillatum (J. D. Hooker & Thomson) Raymond-Hamet (1912), not Linnaeus (1753).

Herbs slender, weak. Flowering stems 7-35 cm. Leaves often 3-verticillate or opposite, inconspicuously pseudopetiolate, usually persistent around middle of stem; leaf blade spatulate-oblong, 0.7-3.5 × ca. 0.7 cm, base narrowly cuneate, apex emarginate to obtuse. Cyme corymbiform, lax; bracts obovate-orbicular to suborbicular, 5-10 × ca. 6 mm. Flowers 5-merous. Sepals narrowly triangular-oblong, ca. 1 × 0.3-0.4 mm, apex obtuse. Petals yellow, narrowly oblong, 4-6.5 × 2-3 mm, apex obtuse. Stamens 10, slightly shorter than petals; antepetalous ones inserted 0.5-0.8 mm from petal base. Nectar scales 3, linear or linear-spatulate, 0.6-1 mm, apex emarginate or obtuse. Carpels 3, divergent, ca. 5 mm, base connate for 1.5-2.5 mm. Styles ca. 1 mm. Follicles divergent, 1- or 2-seeded. Seeds oblong-ovoid, ca. 0.6 mm, minutely mammillate. Fl. Jun-Jul, fr. Aug.

Rocks in mixed forests and valleys near water, mossy rocks in alpine Rhododendron thickets, shady moist rocks in valleys, rock crevices in alpine zone; 2200-3700 m. W Sichuan, E Xizang, Yunnan [Bhutan, Nepal, Sikkim].

1 Leaf blade 0.7-3.5 cm; nectar scales linear, 0.6-0.7 mm, apex obtuse   76a subsp. triactina
+ Leaf blade less than 1 cm; nectar scales linear-spatulate, ca. 1 mm, apex emarginate   76b subsp. leptum

Lower Taxa


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    Photos by The Biodiversity of the Hengduan Mountains Project  
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