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單花老鸛草

中文學名:單花老鸛草

別 稱:單花牻牛兒苗、

早田氏牻牛兒苗、早田氏

香葉草、單花香葉草

二名法:Geranium

hayatanum Ohw

界:植物界

門:被子植物門

綱:雙子葉植物綱

亞 綱:原始花被亞綱

目:牻牛兒苗目

科:牻牛兒苗科

屬:老鸛草屬

組:沼生組

單花老鸛草(學名:Geranium hayatanum)為牻牛兒苗科老鸛草屬的植物,為台灣的特有植物。分布於台灣,目前尚未由人工引種栽培。 [1]

目錄

單花老鸛草形態特徵

多年生草本,高30-50厘米,被柔毛。莖直立,不分枝,葉對生;葉柄長1-5.5厘米;葉片寬圓形或五角狀,寬2-6厘米,3-5深裂,裂片楔狀倒卵形,上部不規則羽狀齒裂,小裂片先端急尖。

花單生,總花梗長於葉;苞片2,長3-8毫米;花梗長2-8厘米;萼片寬卵形,長10-15毫米,寬3-5毫米,先端具尖頭;花瓣倒卵形,紫紅色,長約為萼片的1.5倍,先端鈍圓、微凹,基部楔形。

蒴果長約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.

單花老鸛草生長環境

喜歡潮濕濕熱環境,生長於台灣山林地區。

單花老鸛草分布範圍

主要分布於我國台灣,特有植物,目前尚未由人工引種栽培。

參考來源

  1. 單花老鸛草, 植物智, 2020-01-18
  2. 《中國植物志》 第43(1)卷 (1998) >> 073頁