羽裂红景天
| 羽裂红景天 |
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中文学名:羽裂红景天 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:原始花被亚纲 目:蔷薇目 亚 目:虎耳草亚目 科:景天科 亚 科:景天亚科 属:红景天属 组:红景天组 系:粗茎红景天系 |
羽裂红景天（yǔ liè hóng jǐng tiān，学名：Rhodiola pinnatifida），为双子叶植物纲景天科红景天属下的一个种。 [1]
目录
羽裂红景天形态特征
多年生草本。主根粗，纺锤形，分枝少。根颈短，长1-1.5厘米，直径1-2厘米，先端被鳞片，鳞片长圆状三角形，长4-5毫米，宽3毫米。急尖。
花茎少数，高10-20厘米，直径3-4毫米，直立，密被叶。叶互生，近生，或近于3叶轮生，披针形或线状披针形，长2-3.5厘米，宽3-5毫米，先端急尖，基部渐狭。
花序伞房状伞形，紧密多花，着叶，长1.5-2厘米，宽2.5-3厘米；雌雄异株；花梗比花长；萼片4，黄绿色，披针形，长4毫米，先端稍急尖；
花瓣4，黄色，披针形，或长圆状披针形，长6毫米，先端稍钝；雄蕊8，长9毫米，花丝黄色，花药圆，黄绿色；鳞片4，长1毫米，宽0.5毫米。[2]
蓇葖4，长圆状披针形，长达8毫米，有长1-2毫米的喙；种子长圆形，长达2毫米，褐色。花期6-8月，果期7-8月。 [3]
Rhodiola pinnatifida A. Bor. in Kom. Fl. URSS. 9: 36. Add. 8: 475. 1939.
英文介绍
Sedum pinnatifidum (Borissova) J. P. Kozhevnikov.
Main root few branched, thick, fusiform. Caudex 1-1.5 × 1-2 cm. Caudex leaves scalelike, oblong-triangular, 4-5 × ca. 3 mm, apex acute. Flowering stems few, erect, 10-20 cm × 3-4 mm, densely leafy. Stem leaves alternate, subopposite, or nearly 3-verticillate, linear-lanceolate to lanceolate, 2-3.5 × 0.3-0.5 cm, base attenuate, apex acute. Inflorescences corymbiform-umbellate, compact, 1.5-2 × 2.5-3 cm, many flowered. Flowers unisexual, unequally 4-merous in male plants, shorter than pedicel. Sepals yellowish green, lanceolate, ca. 4 mm, apex subacute. Petals yellow, lanceolate to oblong-lanceolate, ca. 6 mm, apex subobtuse. Stamens 8, ca. 9 mm, ca. 1.5 × as long as petals; filaments yellow; anthers greenish yellow, globose. Nectar scales ca. 1 × 0.5 mm. Follicles oblong-lanceolate, to 8 mm, apical beak 1-2 mm. Seeds brown, oblong, to 2 mm. Fl. Jun-Aug, fr. Jul-Aug.
About 2200 m. N Xinjiang (Altay Shan) [Mongolia, Russia].
Rhodiola pinnatifida falls within the range of variation of R. stephanii and is therefore difficult to separate from the latter species. Further study is needed to determine whether or not the two are conspecific.