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

34. Rhodiola heterodonta (J. D. Hooker & Thomson) Borissova in Komarov, Fl. URSS. 9: 32. 1939.

异齿红景天 yi chi hong jing tian

Sedum heterodontum J. D. Hooker & Thomson, J. Proc. Linn. Soc., Bot. 2: 95. 1858; S. roseum (Linnaeus) Scopoli var. heterodontum (J. D. Hooker & Thomson) Fedtschenko ex Fröderström.

Roots vertical, stout. Caudex branched. Caudex leaves scalelike. Flowering stems erect, 30-40 cm × 4-5 mm. Stem leaves alternate, sessile, triangular-ovate, 1.5-2 × ca. 1.4 cm, base cordate and amplexicaul, margin coarsely serrate, apex acute. Inflorescences corymbiform, compact, 1-1.5 × 1.5-2 cm, ebracteate. Flowers shortly pedicellate, unisexual, male ones unequally 4-merous. Sepals linear, ca. 3 mm, apex obtuse. Petals greenish yellow, linear, to 7 × 1.3 mm, apex subobtuse. Stamens 8, reddish, much longer than petals. Nectar scales linear, apex shallowly concave. Carpels lanceolate, ca. 6 mm. Styles short. Follicles erect, linear-oblong, apical beak curved, short. Seeds brown, ellipsoid. Fl. May-Jun, fr. Jul.

Slopes, sides of ravines, glacial rocks; 2800-4700 m. Xinjiang, Xizang [Afghanistan, India, Mongolia, Pakistan, Tajikistan; SW Asia (Iran)].


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