《中国植物志》|| 景天科 CRASSULACEAE ||四裂红景天系 Ser. Quadrifidae (Frod.) S. H. Fu ||四裂红景天 Rhodiola quadrifida (Pall.) Fisch. & C. A. Mey.

11. 四裂红景天 四裂景天（拉汉种子植物名称）图版35: 9-15
Rhodiola quadrifida (Pall.) Fisch. et Mey. Enum. Pl. Nov. Schrenk 1: 69. 1841; A. Bor. in Kom. Fl. URSS. 9: 39. 1939; Popov, Fl. Sib. Centr. 1: 318. f. 31, 1. 1957; 中国高等植物图鉴2: 79. f. 1888. 1972.——Sedum quadrifidum Pall. Reise III. Anh.: 730. pl. p. f. 1A. 1776; Maxim. in Bull. Acad. Sci. St. Petersb. 29: 125. 1882. excl. varr.; Frod. in Acta Hort. Gothob. 5. Append.: 28. 1930. excl. syn. , quoad pl. 3. f. 1 tantum; H. Ohba in Ohashi, Fl. E. Himal. 3rd. rep. 345. f. 49. 1975.——Sedum coccineum Royle, Ill. Bot. Himal. 1: 223. pl. 48. f. 3. 1838; Jahsson et Rechinger in Rechinger, Fl. Iran. 72: 6. 1970.——Sedum quadrifidum Pall. var. coccineum (Royle) Hk. f. et Thoms. in Journ. Linn. Soc. Bot. 2: 97. 1858.——Chamaerhodiola quadrifida (Pall.) Nakai, Rep. First Sci. Exped. Manch. Sect. IV. Pt. 1: 30. 1934.——Rhodiola coccinea (Royle) A. Bor. in Kom. Fl. URSS. 9: 41. 1939.
多年生草本，主根长达18厘米。根颈直径1-3厘米，分枝，黑褐色，先端被鳞片；老的枝茎宿存，常在100以上。花茎细，直径0.5-1毫米，高3-10（-15）厘米，稻杆色，直立，叶密生。叶互生，无柄，线形，长5-8（-12）毫米，宽1毫米，先端急尖，全缘。伞房花序花少数，宽1.2-1.5厘米，花梗与花同长或较短；萼片4，线状披针形，长3毫米，宽0.7毫米，钝；花瓣4，紫红色，长圆状倒卵形，长4毫米，宽1毫米，钝；雄蕊8，与花瓣同长或稍长，花丝与花药黄色；鳞片4，近长方形，长1.5-1.8毫米，宽0.7毫米。蓇葖4，披针形，长5毫米，直立，有先端反折的短喙，成熟时暗红色；种子长圆形，褐色，有翅。花期5-6月，果期7-8月。
产西藏、四川、新疆、青海、甘肃。生于海拔2900-5100米的沟边、山坡石缝中。巴基斯坦、印度、尼泊尔、锡金、苏联、蒙古也有。模式标本采自苏联西伯利亚地区。
H. Ohbain Journ. Jap. Bot. 57: 52. f. z. 1982. et in Journ. Fac. sci. Univ. Tokyo III. 13: 147. ff. 83-87. 1982. 认为四裂红景天应与大红红景天 Rhodiola coccinea (Royle) A. Bor. 分开。四裂红景天只在我国新疆阿尔泰山、内蒙古、东北有。蒙古及苏联也产。我国新疆大部、甘肃、青海、四川、西藏产的都是大红红景天。

《Flora of China》|| Crassulaceae || Rhodiola ||四裂红景天 Rhodiola quadrifida

11. Rhodiola quadrifida (Pallas) Schrenk in Fischer & C. A. Meyer, Enum. Pl. Nov. 1: 69. 1841.

四裂红景天 si lie hong jing tian

Sedum quadrifidum Pallas, Reise Russ. Reich. 3: 730. 1776; Chamaerhodiola quadrifida (Pallas) Nakai.

Caudex 1-3 cm; persistent old flowering stems present. Winter bud at apex of rhizome conspicuous. Caudex leaves brown, scalelike, triangular, ca. 4 × 4 mm. Flowering stems ± erect, 6-9 cm × 0.5-1 mm. Stem leaves alternate, erect, sessile, linear, subterete, 5-8(-12) × ca. 1 mm, margin entire, apex acute. Inflorescences corymbiform, ca. 1 cm in diam., few flowered. Flowers unisexual, usually 4-merous, equaling or longer than pedicel. Sepals green, linear-lanceolate, ca. 3 mm, apex obtuse. Petals yellow, sometimes reddish at apex, oblong-obovate, ca. 4 mm, apex obtuse. Stamens 8, equaling or slightly longer than petals. Follicles erect, red when mature, lanceolate, ca. 5 mm, apical beak slightly reflexed or erect. Seeds brown, oblong, ca. 2 mm, winged. Fl. May-Jun.

Alpine regions, stony slopes, rocks; 2300-3700 m. Xinjiang [Kazakhstan, Mongolia, Russia].