開啟主選單

求真百科

 矮老鸛草

來自 植物智 的圖片

中文名:矮老鸛草

二名法:Geranium pusillum Linnaeus

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

亞 目:牻牛兒苗亞目

科:牻牛兒苗科

屬:老鸛草屬

種:矮老鶴草

矮老鸛草(ǎi lǎo guàn cǎo),學名:Geranium pusillum Linnaeus ,為牻牛兒苗科老鸛草屬下的一個種。一年生草本 莖高10-50厘米,直立或外傾,節處不生根,有0.1-0.3開展非腺狀毛和0.1-0.2毫米開展的腺毛。托葉披針形,清楚。 葉對生 葉柄具0.1-0.3毫米開展的非腺狀的毛狀體和0.1-0.2毫米開展的腺毛; 葉片1.5-3.8厘米,掌狀半裂,主要凹缺/中間段長的比率=0.3-0.75,具貼伏的非腺狀柔毛;裂片5,倒三角形,基部2-4毫米寬,先端3(-5)淺裂,次凹缺/中間段長的比率=0.16-0.29。小聚傘花序單生,產於海拔1800-2300米,台灣歸化[1]

目錄

矮老鸛草形態特徵

一年生草本 莖高10-50厘米,直立或外傾,節處不生根,有0.1-0.3開展非腺狀毛和0.1-0.2毫米開展的腺毛。托葉披針形,清楚。 葉對生 葉柄具0.1-0.3毫米開展的非腺狀的毛狀體和0.1-0.2毫米開展的腺毛;

葉片1.5-3.8厘米,掌狀半裂,主要凹缺/中間段長的比率=0.3-0.75,具貼伏的非腺狀柔毛;裂片5,倒三角形,基部2-4毫米寬,先端3(-5)淺裂,次凹缺/中間段長的比率=0.16-0.29。

小聚傘花序單生,2花;花序梗0.5-3.2 厘米花梗0.6-1.6厘米,具毫米開展毛狀體和0.1-0.2毫米開展腺毛; 披針形小苞片線形。 萼片3-4.5毫米,短尖頭大約0.1毫米;

短尖頭/萼片長度的比率=0.02-0.03,外面有0.6 -1毫米開展的非腺狀毛和0.2-0.5毫米多少開展的非腺毛和腺毛,外面無毛。花瓣淺紫色,2-3毫米,直立到開展,兩面無毛,基部邊緣具緣毛,先端微缺有0.2-0.5毫米凹口。

雄蕊外輪無花葯,退化為5退化雄蕊;白色的花絲,披針形,背面具柔毛和下半部具緣毛,毛狀體毫米; 略帶紫色的花葯,大約毫米蜜腺5,半球形,無毛。 柱頭淡黃。

果0.9-1.1厘米,未發育完全時直立;分果瓣光滑,沒有基疣,具0.2毫米貼伏的非腺狀毛,基部具少量纖毛;喙7-9毫米,不具狹窄的先端;柱頭殘餘長0.5-0.7毫米。種子1.7-1.8毫米。花期。6-7月,果期8-10月。 2n = 26。

Annuals. Stem 10-50 cm tall, erect or decumbent, not rooting at nodes, with 0.1-0.3 mm patent nonglandular trichomes and 0.1-0.2 mm patent glandular trichomes. Stipules lanceolate, distinct. Leaves opposite; petiole with 0.1-0.3 mm patent nonglandular trichomes and 0.1-0.2 mm patent glandular trichomes; leaf blade 1.5-3.8 cm, palmately cleft, ratio of main sinus/middle segment length = 0.3-0.75, pilose with appressed nonglandular trichomes; segments 5, obtriangular, 2-4 mm wide at base, 3(-5)-lobed at apex, ratio of second sinus/middle segment length = 0.16-0.29.

Cymules solitary, 2-flowered; peduncle 0.5-3.2 cm. Pedicel 0.6-1.6 cm, with 0.1-0.3 mm patent nonglandular trichomes and 0.1-0.2 mm patent glandular trichomes; bracteoles linear-lanceolate. Sepals 3-4.5 mm, mucro ca. 0.1 mm, ratio of mucro/sepal length = 0.02-0.03, outside with 0.6-1 mm patent nonglandular trichomes and 0.2-0.5 mm ± patent nonglandular and glandular trichomes, outside glabrous.

Petals pale purple, 2-3 mm, erect to patent, both surfaces glabrous, margin basally ciliate, apex emarginate with a 0.2-0.5 mm notch. Stamens external whorl lacking anthers and reduced to 5 staminodes; filaments white, lanceolate, abaxially pilose and proximal half ciliate, trichomes 0.1-0.2 mm; anthers purplish, ca. 0.3 mm. Nectaries 5, hemispheric, glabrous.

Stigma yellowish. Fruit 0.9-1.1 cm, erect when immature; mericarps smooth, without a basal callus, with to 0.2 mm appressed nonglandular trichomes, base with a few cilia; rostrum 7-9 mm, without a narrowed apex; stigmatic remains 0.5-0.7 mm. Seeds 1.7-1.8 mm. Fl. Jun-Jul, fr. Aug-Oct. 2n = 26.

產地生境

Open habitats, dry grassland, cultivated and waste places; 1800-2300 m. Naturalized in Taiwan [native to Afghanistan, W Asia, Europe, Kashmir, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Turkmenistan, Uzbekistan].

開闊的生境,乾燥牧場,栽培的和廢棄處;海拔1800-2300米。在台灣歸化 [原產於阿富汗,亞洲西部,歐洲,克什米爾,哈薩克斯坦,吉爾吉斯斯坦,俄羅斯,塔吉克斯坦,土庫曼斯坦,烏茲別克 ].

辨析

Although found as a naturalized weed in Taiwan, this species could be found as a native plant near the W boundaries of China, because its natural area includes the W Himalayas. This species also grows as an introduced weed in America and Australia. 雖然在台灣被認為是一種歸化的野草,但本種在中國西部邊界上應該能夠找到,因為它的自然分布區包括喜瑪拉雅山脈西部。本種在美國和澳大利亞也是一種引入的雜草。

參考來源

  1. 矮老鸛草, 植物智, 2020-01-18