小丛红景天 xiao cong hong jing tian

Sedum dumulosum Franchet, Nouv. Arch. Mus. Hist. Nat., sér. 2, 6: 9. 1883; Chamaerhodiola dumulosa (Franchet) Nakai; C. wulingensis Nakai; Sedum dumulosum var. rendleri (Raymond-Hamet) Fröderström; S. farreri Raymond-Hamet; S. rariflorum N. E. Brown; S. rendleri Raymond-Hamet; S. talilhsiense Fröderström; S. wulingense (Nakai) Kitagawa.

Caudex branched, robust; persistent old flowering stems present as remnants. Flowering stems aggregated apically on caudex, simple, erect or curved, 5-28 cm. Stem leaves alternate, sessile, linear to broadly so, 7-10 × 1-2 mm, margin entire, apex subacute. Inflorescences cymose, 4-7-flowered. Flowers unequally 5-merous. Sepals linear-lanceolate, ca. 4 × 0.7-0.9 mm, base broad, apex acuminate. Petals erect, white or red, lanceolate-oblong, 8-11 × 2.3-2.8 mm, margin entire or sparsely fimbriate, apex acuminate and long mucronate. Stamens 10, shorter than petals; antesepalous ones ca. 7 mm; antepetalous ones ca. 3 mm, inserted ca. 3 mm from petal base. Nectar scales transversely oblong, apex emarginate. Carpels erect, ovoid-oblong, 6-9 mm, base connate for 1-1.5 mm. Seeds oblong, finely mammillate, narrowly winged. Fl. Jun-Jul, fr. Aug.

Rocks on slopes; 1600-4100 m. Gansu, Hebei, Hubei, Jilin, Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, Yunnan [Bhutan, Myanmar].