《中国植物志》|| 牻牛儿苗科 GERANIACEAE ||鼠掌组 Sect. Sibirica R. Knuth in Engl. Pflanzenr. Heft ||鼠掌老鹳草 Geranium sibiricum L.

7. 鼠掌老鹳草（中国高等植物图鉴）图版8：1
Geranium sibiricum L. Sp. Pl. 683. 1753; Edgew. et Hook. f. in Hook. f. Fl. Brit. Ind. 1: 431. 1875; R. Knuth. in Engl. Pflanzenr. Heft 53. 4 (129); 195. 1912; Kitag. Lineam. Fl. Mansh. 197. 1939; Bobr. in Schischk. et Bobr. Fl. URSS 14: 57. 1949; 中国高等植物图鉴2: 530. 图2784. 1972; 东北草本植物志 6: 16. 1977; 内蒙古植物志4: 3. 1979; 西藏植物志3: 5. 1986; 横断山区维管植物1: 1026. 1993.
一年生或多年生草本，高30-70厘米，根为直根，有时具不多的分枝。茎纤细，仰卧或近直立，多分枝，具棱槽，被倒向疏柔毛。叶对生；托叶披针形，棕褐色，长8-12厘米，先端渐尖，基部抱茎，外被倒向长柔毛；基生叶和茎下部叶具长柄，柄长为叶片的2-3倍；下部叶片肾状五角形，基部宽心形，长3-6厘米，宽4-8厘米，掌状5深裂，裂片倒卵形、菱形或长椭圆形，中部以上齿状羽裂或齿状深缺刻，下部楔形，两面被疏伏毛，背面沿脉被毛较密；上部叶片具短柄，3-5裂。总花梗丝状，单生于叶腋，长于叶，被倒向柔毛或伏毛，具1花或偶具2花；苞片对生，棕褐色、钻伏、膜质，生于花梗中部或基部；萼片卵状椭圆形或卵状披针形，长约5毫米，先端急尖，具短尖头，背面沿脉被疏柔毛；花瓣倒卵形，淡紫色或白色，等于或稍长于萼片，先端微凹或缺刻状，基部具短爪；花丝扩大成披针形，具缘毛；花柱不明显，分枝长约1毫米。蒴果长15-18毫米，被疏柔毛，果梗下垂。种子肾状椭圆形，黑色，长约2毫米，宽约1毫米。花期6-7月，果期8-9月。
分布于东北、华北、湖北、西北、西南。生于林缘、疏灌丛、河谷草甸或为杂草。欧洲、高加索、中亚、俄罗斯西伯利亚、蒙古、朝鲜和日本北部皆有分布。

《Flora of China》|| Geraniaceae || Geranium ||鼠掌老鹳草 Geranium sibiricum

15. Geranium sibiricum Linnaeus, Sp. Pl. 2: 683. 1753.

鼠掌老鹳草 shu zhang lao guan cao

Perennials. Rootstock ± vertical, 2-5.3 mm in diam., not tuberculate, with thickened roots along rootstock. Stem 15-95 cm tall, erect or ascending, not rooting at nodes, with 0.3-1 mm patent or retrorse nonglandular trichomes. Stipules lanceolate to subulate, distinct. Leaves opposite; petiole with 0.3-1.5 mm patent to retrorse nonglandular trichomes; leaf blade 1.7-5.8 cm, palmately cleft, ratio of main sinus/middle segment length = 0.83-0.92, pilose with appressed nonglandular trichomes; segments 5, narrowly rhombic, 3.2-5.5 mm wide at base, 7-14-lobed in distal half, ratio of second sinus/middle segment length = 0.18-0.28. Cymules solitary, 1(or 2)-flowered; peduncle (0-)0.9-8.8 cm. Pedicel 1.8-3.5 cm, with 0.2-0.8 mm patent to retrorse nonglandular trichomes; bracteoles linear-lanceolate. Sepals 3.7-6.4 mm, mucro 0.9-1.6 mm, ratio of mucro/sepal length = 0.17-0.34, outside with 0.2-1.1 mm patent to antrorse ± appressed nonglandular trichomes, inside glabrous. Petals white or pink with purplish veins, 4-5.4(-5.8) mm, erect to patent, both surfaces glabrous, margin basally ciliate, apex rounded or slightly notched. Staminal filaments yellowish, lanceolate with an abruptly narrowed apex, both sides glabrous but proximal half ciliate with 0.1-0.3 mm trichomes; anthers bluish, 0.3-0.7 mm. Nectaries 5, hemispheric, glabrous. Stigma yellowish. Fruit 1.4-1.9 cm, erect when immature; mericarps smooth with 1 transversal vein at apex, with a basal callus, with 0.1-1.5 mm ± patent nonglandular trichomes; rostrum 0.8-1.4 cm, with a 0.4-1 mm narrowed apex; stigmatic remains 0.8-1.3 mm. Seeds 2-2.8 mm. Fl. Jun-Jul, fr. Jul-Aug. 2n = 28.

Forest margins, scrub, meadows, weedy areas; 2000-3900 m. Gansu, NE Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangxi, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Xizang, Yunnan [Afghanistan, N Japan, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; W Asia, Europe].

This species is characterized by 1-flowered cymules and by leaves with narrow segments. Some specimens occasionally have 2-flowered cymules, although most of the inflorescences have 1-flowered cymules. Some authors have suggested that European plants are characterized by pink to pinkish violet petals and villous vegetative parts and Siberian plants by white to pale pink petals and short and appressed trichomes. In Chinese specimens, these characters appear mixed in different combinations, which does not support such a division. Note also the discussion under Geranium nepalense.