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岩生老鸛草檢視原始碼討論檢視歷史

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 岩生老鸛草

來自 植物智 的圖片

中文名:岩生老鸛草

二名法: Geranium

saxatile Kar. & Kir.

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:岩生老鶴草

岩生老鸛草(yán shēng lǎo guàn cǎo),學名:Geranium saxatile Karelin & Kirilov,為牻牛兒苗科老鸛草屬下的一個種。多年生草本。根莖多少水平,短,直徑7.1-10.2毫米,不具瘤,具很多纖維狀的長根。9-48厘米高的莖,直立,並非根在節上,具0.2-0.4毫米貼伏非腺狀毛狀體和很少開展腺毛0.3-0.4毫米。 托葉披針形,清楚。 葉對生 葉柄有0.2-0.5毫米的反折貼伏的非腺毛和有時具0.4-0.5毫米開展的腺毛;葉片1.7-6.2厘米,掌狀半裂,主要凹缺/中間段長的比率=0.72-0.84,具貼伏的非腺狀柔毛;裂片5,菱形,長葉海拔2200-3100米,新疆(天山)。 [1]

岩生老鸛草形態特徵

多年生草本。根莖多少水平,短,直徑7.1-10.2毫米,不具瘤,具很多纖維狀的長根。9-48厘米高的莖,直立,並非根在節上,具0.2-0.4毫米貼伏非腺狀毛狀體和很少開展腺毛0.3-0.4毫米。

托葉披針形,清楚。 葉對生 葉柄有0.2-0.5毫米的反折貼伏的非腺毛和有時具0.4-0.5毫米開展的腺毛;葉片1.7-6.2厘米,掌狀半裂,主要凹缺/中間段長的比率=0.72-0.84,具貼伏的非腺狀柔毛;

裂片5,菱形,基部寬2.5-8.8毫米,上半部6-15裂,次凹缺/中間段長的比率=0.19-0.31。小聚傘花序單生,2花;花序梗4.1-14 (-23)厘米。花梗0.1-8.3厘米,具0.2-0.5毫米反折具鈎的非腺狀毛,並通常具0.2-0.6毫米開展腺毛;

小苞片披針形。萼片(8.4-)9-10.3(-11.3)毫米, 短尖頭0.7-1.9(-2.5)毫米, 花瓣略帶紫色,(1.6-)1.8-2.8厘米,直立到開展,兩面無毛,基部具緣毛,先端微缺具0.3-1.4毫米凹槽。

花絲帶粉紅色,披針形具寬三角形基部和突然狹窄的先端,除了下半部具0.1-0.3毫米纖毛外無毛;帶褐色的花葯乾燥時,2.1-2.9毫米蜜腺5,半球形,背面無毛,先端具一塊毛狀體的多孔軟岩。

柱頭干時紫色。果3.4-4厘米,發育完全時直立,帶有白色透明具腺毛和短柔毛。種子 3-3.5 × 1.4-1.8毫米。 花期7月8月,果期8月9月。

Perennials. Rootstock ± horizontal, short, 7.1-10.2 mm in diam., not tuberculate, with many fibrous long roots. Stem 9-48 cm tall, erect, not rooting at nodes, with 0.2-0.4 mm retrorse appressed nonglandular trichomes and rarely 0.3-0.4 mm patent glandular trichomes.

Stipules lanceolate, distinct. Leaves opposite; petiole with 0.2-0.5 mm retrorse appressed nonglandular trichomes and sometimes 0.4-0.5 mm patent glandular trichomes; leaf blade 1.7-6.2 cm, palmately cleft, ratio of main sinus/middle segment length = 0.72-0.84, pilose with appressed nonglandular trichomes; segments 5, rhombic, 2.5-8.8 mm wide at base, 6-15-lobed in distal half, ratio of second sinus/middle segment length = 0.19-0.31. Cymules solitary, 2-flowered; peduncle 4.1-14(-23) cm.

Pedicel 0.1-8.3 cm, with 0.2-0.5 mm retrorse uncinate nonglandular trichomes and usually 0.2-0.6 mm patent glandular trichomes; bracteoles lanceolate. Sepals (8.4-)9-10.3(-11.3) mm, mucro 0.7-1.9(-2.5) mm, ratio of mucro/sepal length = 0.08-0.24, outside with 0.2-0.6 mm antrorse ± appressed nonglandular trichomes and usually 0.3-0.5 mm patent glandular trichomes, inside glabrous.

Petals purplish, (1.6-)1.8-2.8 cm, erect to patent, both surfaces glabrous, margin basally ciliate, apex emarginate with a 0.3-1.4 mm notch. Staminal filaments pinkish, lanceolate with a broadly triangular base and an abruptly narrowed apex, glabrous except proximal half with some 0.1-0.3 mm cilia; anthers brownish when dry, 2.1-2.9 mm.

Nectaries 5, hemispheric, abaxially glabrous, apex with a tuft of trichomes. Stigma purple when dry. Fruit 3.4-4 cm, erect when immature, with white hyaline glandular trichomes and pubescences. Seeds 3-3.5 × 1.4-1.8 mm. Fl. Jul-Aug, fr. Aug-Sep.

產地生境

Subalpine and alpine meadows; 2200-3100 m. Xinjiang (Tian Shan) [Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan].

亞高山和高山草甸;海拔2200-3100米。新疆(天山) [哈薩克斯坦,吉爾吉斯斯坦,塔吉克斯坦,土庫曼,烏茲別克 ].

辨析

The long petals with emarginate apex of Geranium saxatile are unique among species that have filaments with a broadly triangular base. Geranium sophiae Fedorov, a poorly known species endemic to Fergana Range in Uzbekistan, also has long and emarginate petals. However, its leaves (including an obtriangular middle segment with 3(-5) deep lobes at the apex) are very different from those of G. saxatile.

Geranium saxatile是在花絲有寬三角形基部的所有種中,唯一一個有長且具微缺花瓣的種。Geranium sophiae Fedorov 是烏茲別克Fergana Range的一個了解不多的特有種,它也有長且具微缺的花瓣。然而,它的葉片(包括先端具3(-5)深裂的倒三角形的中央裂片)與G. saxatile大不相同。

參考來源

  1. 雲南老鸛草, 植物智, 2020-01-18