髯毛老鸛草檢視原始碼討論檢視歷史
| 髯毛老鸛草 |
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中文名:髯毛老鸛草 二名法:Geranium pogonanthum Franchet 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:髯毛老鶴草 |
髯毛老鸛草((rán máo lǎo guàn cǎo)，學名：Geranium pogonanthum Franchet，異名：Geranium meiguense Geranium lankongense Geranium palustre var. stipulaceum 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，直徑4.2-15.6毫米，不具瘤，根沿着根莖加粗。22-59厘米高的莖，直立，並非根在節上，具0.4-1.1毫米對開展非腺狀毛狀體和很少開展腺毛1-1.9毫米。 托葉寬披針形，至少在基部合生。葉對生 葉柄有0.4-1.1毫米開展到反折的非腺狀毛；葉片3.9-7.6厘米，掌狀半裂，主要凹缺/中間段長的比率=0.68-0.92，具多少貼伏的非腺狀毛被；裂片5，菱形，基部寬4.7-10.1毫米，上半部7-29裂，次凹缺/中間段長的比率=0.17-0.34。小聚傘花序單生， [1]
髯毛老鸛草形態特徵
多年生草本。根莖多少水平，直徑4.2-15.6毫米，不具瘤，根沿着根莖加粗。22-59厘米高的莖，直立，並非根在節上，具0.4-1.1毫米對開展非腺狀毛狀體和很少開展腺毛1-1.9毫米。
托葉寬披針形，至少在基部合生。葉對生 葉柄有0.4-1.1毫米開展到反折的非腺狀毛；葉片3.9-7.6厘米，掌狀半裂，主要凹缺/中間段長的比率=0.68-0.92，具多少貼伏的非腺狀毛被；
裂片5，菱形，基部寬4.7-10.1毫米，上半部7-29裂，次凹缺/中間段長的比率=0.17-0.34。小聚傘花序單生，2花；花序梗5-11厘米。花梗1-3.4厘米，具0.3-0.6毫米開展到反折的非腺狀毛和有時0.2-0.5毫米開展的具腺毛；
小苞片絲狀的到披針形。 萼片6.9-11.1毫米，短尖頭1.1-2.3毫米，短尖頭/萼片長度比率=0.12-0.31，外面具0.4-1.2毫米多少開展的非腺狀毛和有時具0.2-0.6毫米開展的具腺毛，裡面無毛。
花瓣白色到粉紅色或略帶紫色， (1.2-)1.3-1.4(-1.7)厘米，反折，基部在裡面、邊緣和有時外表面上具一叢密毛，先端圓形。花絲粉紅色到略帶紫色，披針形，背面密具柔毛並且下半部具緣毛，毛和1-1.8毫米；
花葯微黑色，1.7-3.1毫米。蜜腺5，半球形，背面無毛，先端具一簇毛。柱頭略帶紫色。 果2.4-3.6厘米，未發育完全時有節；分果爿光滑，具基疣，有0.4-0.8毫米多少開展的非腺狀毛；
喙1.6-2.8厘米，帶有5.9-6.2毫米狹窄的先端；柱頭殘餘長2.3-3.1毫米。種子2.5-3.5毫米。花期。7月8月，果期8月10月。
Geranium lankongense H. W. Li; G. meiguense Z. M. Tan; G. palustre Linnaeus var. stipulaceum Franchet.Perennials. Rootstock ± horizontal, 4.2-15.6 mm in diam., not tuberculate, with thickened roots along rootstock. Stem 22-59 cm tall, erect, not rooting at nodes, with 0.4-1.1 mm retrorse to patent nonglandular trichomes and rarely 1-1.9 mm patent glandular trichomes.
Stipules broadly lanceolate, connate at least at base. Leaves opposite; petiole with 0.4-1.1 mm patent to retrorse nonglandular trichomes; leaf blade 3.9-7.6 cm, palmately cleft, ratio of main sinus/middle segment length = 0.68-0.92, pilose with ± appressed nonglandular trichomes; segments 5, rhombic, 4.7-10.1 mm wide at base, 7-29-lobed in distal half, ratio of second sinus/middle segment length = 0.17-0.34. Cymules solitary, 2-flowered; peduncle 5-11 cm.
Pedicel 1-3.4 cm, with 0.3-0.6 mm patent to retrorse nonglandular trichomes and sometimes 0.2-0.5 mm patent glandular trichomes; bracteoles filiform to lanceolate. Sepals 6.9-11.1 mm, mucro 1.1-2.3 mm, ratio of mucro/sepal length = 0.1-0.2, outside with 0.6-1.7 mm ± patent nonglandular trichomes and sometimes 0.8-1.4 mm patent glandular trichomes, inside glabrous.
Petals white to pink or purplish, (1.2-)1.3-1.4(-1.7) cm, reflexed, basally with a dense tuft of trichomes on inside surface, margin, and sometimes outside surface, apex rounded. Staminal filaments pink to purplish, lanceolate, abaxially densely pilose and proximal half ciliate, trichomes 1-1.8 mm; anthers blackish, 1.7-3.1 mm. Nectaries 5, hemispheric, abaxially glabrous, apex with a tuft of trichomes.
Stigma purplish. Fruit 2.4-3.6 cm, nodding when immature; mericarps smooth, with a basal callus, with 0.4-0.8 mm ± patent nonglandular trichomes; rostrum 1.6-2.8 cm, with a 5.9-6.2 mm narrowed apex; stigmatic remains 2.3-3.1 mm. Seeds 2.5-3.5 mm. Fl. Jul-Aug, fr. Aug-Oct.
產地生境
● Forest margins, scrub, meadows; 3000-3500 m. Sichuan, Yunnan. ●林緣，灌叢，牧場；海拔3000-3500米。四川，雲南。
辨析
This species is difficult to differentiate from Geranium delavayi when fresh petals are not available to observe their colors. However, G. pogonanthum has staminal filaments with longer and abundant trichomes and longer petals. Glandular indumentum is also variable in G. pogonanthum, being sometimes just present on the stem base and other times only on the inflorescence. Bracteoles are sometimes filiform, like in G. delavayi, and other times lanceolate as in G. yunnanense.
當嫩花瓣還辨不清顏色時，本種很難與Geranium delavayi區別。不過，G. pogonanthum花絲有長和密的毛並且它的花瓣長。腺毛毛被在G. pogonanthum也易變，有時只在莖基部宿存而其他時候只在花序上有。小苞片有時絲狀，象G. delavayi；而有時又成披針形，象G. yunnanense。