长白红景天Rhodiola angusta

中文名(Chinese Name):长白红景天
学名(Scientific Name):Rhodiola angusta Nakai
英文名(English Common Name):
别名(Chinese Common Name):长白景天、乌苏里景天
异名(Synonym):Rhodiola komarovii Boriss.  Rhodiola ramosa Nakai  Sedum fenzelii Fröd.  Sedum ohbae Kozhevn.  Sedum komarovii (Boriss.) Chu
科属(Family & Genus):景天科(Crassulaceae)红景天属
形态特征(Description):多年生草本。主根常不分枝。根颈直立,细长,直径5-7毫米,残留老枝少数,先端被三角形鳞片。花茎直立,长3.5-10厘米,稻杆色,密着叶。叶互生,线形,长1-2厘米,宽1-2毫米,先端稍钝,基部稍狭,全缘或在上部有1-2牙齿。伞房状花序,多花或少花,雌雄异株;萼片4,线形,长2-4毫米,稍不等长,宽0.8毫米,钝;花瓣4,黄色,长圆状披针形,长4-5毫米,宽1毫米,先端钝;雄蕊8,较花瓣稍短或同长,对瓣的着生基部上1.8毫米处;鳞片4,近四方形,长0.4-0.5毫米,宽0.5-0.6毫米,先端稍平或有微缺;心皮在雄花中不育,在雌花中心皮披针形,直立,长6毫米,先端渐尖,花柱长1.5毫米,柱头头状。蓇葖4,紫红色,直立,长达7-8毫米,先端稍外弯;种子披针形,两端有翅,连翅长2-3毫米。花期7-8月,果期8-9月。
分布(Distribution):产吉林及黑龙江,生于海拔1700-2600米的高山草原或山坡石上。朝鲜及俄罗斯也有。
用途(Use):
引自中国植物志英文版FOC Vol. 8 Page 259
Rhodiola angusta Nakai, Bot. Mag. (Tokyo). 28: 304. 1914.
长白红景天 chang bai hong jing tian | Crassulaceae  | Rhodiola
Rhodiola komarovii Borissova; R. ramosa Nakai; Sedum fenzelii Fröderström; S. komarovii (Borissova) Chu; S. ohbae J. P. Kozhevnikov.
Main root often simple. Caudex erect, slender, 5-7 mm in diam.; persistent old flowering branches few, present as remnants. Caudex leaves scalelike, triangular. Flowering stems erect, straw-colored, 3.5-10 cm, densely leafy. Stem leaves alternate, linear, 10-20 × 1-2 mm, base slightly narrowed, margin entire or apically 1- or 2-dentate, apex obtuse. Inflorescences corymbiform, few to many flowered. Flowers unisexual, male ones unequally 4-merous. Sepals linear, 2-4 mm, apex obtuse. Petals yellow, oblong-lanceolate, 4-5 × ca. 1 mm, apex obtuse. Stamens 8, slightly shorter than or equaling petals; antepetalous ones inserted ca. 1.8 mm from petal base. Nectar scales subquadrangular, 0.4-0.5 × 0.5-0.6 mm, apex truncate to emarginate. Carpels erect, lanceolate, ca. 6 mm, apex acuminate. Styles ca. 1.5 mm. Stigma capitate. Follicles erect, purplish red, 7-8 mm, apical beak ± recurved. Seeds lanceolate, winged at both ends. Fl. Jul-Aug, fr. Aug-Sep.
Alpine grasslands, rocks on slopes; 1700-2600 m. Heilongjiang [Korea, Russia].
长白红景天Rhodiola angusta

长白红景天Rhodiola angusta

长白红景天Rhodiola angusta

长白红景天Rhodiola angusta

(责任编辑:徐晔春)

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