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粗根老鹳草Geranium dahuricum

时间:2013-09-11 11:59来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):粗根老鹳草 学名( Scientific Name ): Geranium dahuricum DC. 英文名( English Common Name ): 别名( Chinese Common Name ): 块根老鹳草、长白老鹳草 异名( Synonym ): Geranium dahuricum var. paishanense (Y. L.
中文名(Chinese Name):粗根老鹳草
学名(Scientific Name):Geranium dahuricum DC.
英文名(English Common Name):
别名(Chinese Common Name):块根老鹳草、长白老鹳草
异名(Synonym):Geranium dahuricum var. paishanense (Y. L. Cheng) Huang et L. R. Xu  Geranium paishanense Y. L. Cheng  Geranium dahuricum var. baiheense Z. H. Lu et Y. C. Zhu  Geranium pissjaukovae Tsyren.  Geranium prrobatovae Tsyren.  Geranium lasiocaulon Nakai  Geranium dahuricum f. lobulatum Nakai  Geranium napuligerum f. lobulatum (Nakai) Nakai  Geranium yesoense f. lobulatum (Nakai) H. Hara  Geranium dahuricum var. alpinum Bar. & Skv. in Liou & al.
科属(Family & Genus):牻牛儿苗科(Geraniaceae)老鹳草属
形态特征(Description):多年生草本,高20-60厘米。根茎短粗,斜生,具簇生纺锤形块根。茎多数,直立,具棱槽,假二叉状分枝,被疏短伏毛或下部近无毛,亦有时全茎被长柔毛或基部具腺毛,叶基生和茎上对生;托叶披针形或卵形,长6-8毫米,宽2-3毫米,先端长渐尖,外被疏柔毛;基生叶和茎下部叶具长柄,柄长为叶片的3-4倍,密被短伏毛,向上叶柄渐短,最上部叶几无柄;叶片七角状肾圆形,长3-4厘米,宽5-6厘米,掌状7深裂近基部,裂片羽状深裂,小裂片披针状条形、全缘,表面被短伏毛,背面被疏柔毛,沿脉被毛较密或仅沿脉被毛。花序腋生和顶生,长于叶,密被倒向短柔毛,总花梗具2花;苞片披针形,长4-9毫米,宽约2毫米,先端长渐尖;花梗与总梗相似,长约为花的2倍,花、果期下弯;萼片卵状椭圆形,长5-7毫米,宽约3毫米,先端具短尖头,背面和边缘被长柔毛;花瓣紫红色,倒长卵形,长约为萼片的1.5倍,先端圆形,基部楔形,密被白色柔毛;雄蕊稍短于萼片,花丝棕色,下部扩展,被睫毛,花药棕色;雌蕊密被短伏毛。种子肾形,具密的微凹小点。花期7-8月,果期8-9月。
分布(Distribution):分布于东北、内蒙古、河北、山西、陕西、宁夏、甘肃、青海、四川西部和西藏东部。生于海拔3500米以下的山地草甸或亚高山草甸。俄罗斯东、蒙古、朝鲜有分布。
用途(Use):
引自中国植物志英文版FOC Vol. 11 Page 9, 20, 24, 25, 27
Geranium dahuricum Candolle, Prodr. 1: 642. 1824.
粗根老鹳草 cu gen lao guan cao| Geraniaceae  | Geranium
Geranium dahuricum var. baiheense Z. H. Lu & Y. C. Zhu; G. dahuricum var. paishanense (Y. L. Chang) C. C. Huang & L. R. Xu; G. paishanense Y. L. Chang.
Perennials. Rootstock ± vertical, 4-8 mm in diam., not tuberculate, with a fascicle of long and thickened roots. Stem 23-48(-72) cm tall, erect, not rooting at nodes, with 0.3-1 mm retrorse appressed nonglandular trichomes. Stipules lanceolate, connate at least at base. Leaves opposite; petiole with 0.2-1 mm retrorse appressed nonglandular trichomes; leaf blade 3.7-5.9 cm, palmately cleft, ratio of main sinus/middle segment length = (0.83-)0.86-0.95, pilose with appressed nonglandular trichomes; segments 5, rhombic, 1.6-5.7 mm wide at base, 4-7(-10)-lobed in distal half, ratio of second sinus/middle segment length = 0.23-0.46. Cymules solitary, 2-flowered; peduncle 2.2-6.4(-10) cm. Pedicel 1.8-4.4 cm, with 0.2-0.5 mm retrorse appressed nonglandular trichomes; bracteoles lanceolate. Sepals 5.5-6.9(-9) mm, mucro 0.9-1.5(-2) mm, ratio of mucro/sepal length = 0.13-0.28, outside with 0.3-1.6 mm antrorse ± appressed nonglandular trichomes, inside glabrous. Petals light pink, (0.8-)0.9-1.3(-1.4) cm, erect to patent, outside basally with trichomes, inside basal 1/3-1/2 or rarely to apex with trichomes, margin basally ciliate, apex rounded. Staminal filaments pinkish, lanceolate with an abruptly narrowed apex, abaxially pilose and proximal half ciliate, trichomes 0.2-0.8 mm; anthers bluish, 1.4-2 mm. Nectaries 5, hemispheric, usually glabrous. Stigma reddish. Fruit 1.7-2.6 cm, erect when immature; mericarps smooth, with a basal callus, with 0.2-0.7 mm ± patent nonglandular trichomes and apically with 0.9-1.2 mm patent glandular trichomes; rostrum 1-1.8 cm, with a 1.5-2.1 mm narrowed apex; stigmatic remains 2.8-4.5 mm. Seeds 1.6-2 mm. Fl. Jul-Aug, fr. Aug-Sep. 2n = 28.
Meadows, subalpine meadows, alpine meadows; 1500-3500 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, W Sichuan, NE and SE Xinjiang, Xizang (Gongbo’gyamda) [Korea, Mongolia, Russia (Baikal, E Siberia)].
Geranium dahuricum is quite similar to G. soboliferum. The latter is usually a more robust plant with longer and more deeply divided leaf blades, longer sepals, and petals and nectaries with trichomes. Geranium krameri is also close to G. dahuricum. In addition to characters mentioned in the key, the former is more robust and its leaf blade segments have a tendency to show ± straight sides. Geranium dahuricum has nectaries usually glabrous, although sometimes scattered trichomes can be found.




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