单花老鹳草查看源代码讨论查看历史
| 单花老鹳草 |
|
中文学名:单花老鹳草 别 称:单花牻牛儿苗、 早田氏牻牛儿苗、早田氏 香叶草、单花香叶草 二名法:Geranium hayatanum Ohw 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:牻牛儿苗目 科:牻牛儿苗科 属:老鹳草属 组:沼生组 |
单花老鹳草（学名：Geranium hayatanum）为牻牛儿苗科老鹳草属的植物，为台湾的特有植物。分布于台湾，目前尚未由人工引种栽培。 [1]
单花老鹳草形态特征
多年生草本，高30-50厘米，被柔毛。茎直立，不分枝，叶对生；叶柄长1-5.5厘米；叶片宽圆形或五角状，宽2-6厘米，3-5深裂，裂片楔状倒卵形，上部不规则羽状齿裂，小裂片先端急尖。
花单生，总花梗长于叶；苞片2，长3-8毫米；花梗长2-8厘米；萼片宽卵形，长10-15毫米，宽3-5毫米，先端具尖头；花瓣倒卵形，紫红色，长约为萼片的1.5倍，先端钝圆、微凹，基部楔形。
蒴果长约2.5厘米。 [2]
PDFGeranium hayatanum Ohwi in Act. Phytotax. Geobot. 2: 152. 1933; Fl. Taiwan. 3: 428. 1977.——Geranium uniflorum Hayata in Journ. Coll. Sci. Univ. Tokyo 25 (19): 65. 1908 et 30 (1): 50. 1911 (non Pach.); Icon. Pl. Form. 1: 113. 1911 et 7: 4. Pl. 3. 1918.
Perennials. Rootstock ± horizontal, 3.6-8 mm in diam., not tuberculate, with thickened roots along rootstock. Stem 18-60 cm tall, trailing or ascending, not rooting at nodes, with 0.2-1 mm patent to retrorse nonglandular trichomes. Stipules broadly ovate, connate. Leaves opposite; petiole with 0.3-1 mm patent to retrorse nonglandular trichomes; leaf blade 2.8-7.2 cm, palmately cleft, ratio of main sinus/middle segment length = 0.75-0.92, pilose with appressed nonglandular trichomes; segments 5, rhombic, 3.4-9.8 mm wide at base, 5-11-lobed in distal half, ratio of second sinus/middle segment length = 0.21-0.38. Cymules solitary, 1-flowered; peduncle (0.9-)2.4-7.6(-15.4) cm. Pedicel 1.5-3(-5) cm, with 0.2-0.8 mm patent to retrorse sometimes uncinate nonglandular trichomes; bracteoles lanceolate. Sepals 6.5-10.1 mm, mucro 1.1-2.5 mm, ratio of mucro/sepal length = 0.14-0.24, outside with 0.2-1.4 mm antrorse to patent nonglandular trichomes, inside glabrous. Petals light purplish with a whitish base, (1.2-)1.4-1.8(-2) cm, erect to patent, both surfaces basally with trichomes, margin basally ciliate, apex rounded or rarely emarginate with a 0.2-0.4 mm notch. Staminal filaments purplish distally but paler at base, lanceolate, abaxially pilose and proximal half ciliate, trichomes 0.2-0.6 mm; anthers bluish, 1.7-2.1 mm. Nectaries 5, hemispheric, abaxially glabrous, apex with a tuft of trichomes. Stigma deep pink. Fruit 2.4-3.2 cm, erect when immature; mericarps smooth, with a basal callus, with 0.3-1.2 mm erect to patent nonglandular trichomes; rostrum 1.5-2.3 cm, with a 1.6-3.4 mm narrowed apex; stigmatic remains 3.5-5.6 mm. Seeds 2.3-3.5 mm. Fl. Jul, fr. Aug.
单花老鹳草生长环境
喜欢潮湿湿热环境，生长于台湾山林地区。
单花老鹳草分布范围
主要分布于我国台湾，特有植物，目前尚未由人工引种栽培。