岩生老鹳草查看源代码讨论查看历史
| 岩生老鹳草 |
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中文名:岩生老鹳草 二名法: Geranium saxatile Kar. & Kir. 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 亚 目:牻牛儿苗亚目 科:牻牛儿苗科 属:老鹳草属 种:岩生老鹤草 |
岩生老鹳草(yán shēng lǎo guàn cǎo)，学名：Geranium saxatile Karelin & Kirilov，为牻牛儿苗科老鹳草属下的一个种。多年生草本。根茎多少水平，短，直径7.1-10.2毫米，不具瘤，具很多纤维状的长根。9-48厘米高的茎，直立，并非根在节上，具0.2-0.4毫米贴伏非腺状毛状体和很少开展腺毛0.3-0.4毫米。 托叶披针形，清楚。 叶对生 叶柄有0.2-0.5毫米的反折贴伏的非腺毛和有时具0.4-0.5毫米开展的腺毛；叶片1.7-6.2厘米，掌状半裂，主要凹缺/中间段长的比率=0.72-0.84，具贴伏的非腺状柔毛；裂片5，菱形，长叶海拔2200-3100米，新疆(天山)。 [1]
岩生老鹳草形态特征
多年生草本。根茎多少水平，短，直径7.1-10.2毫米，不具瘤，具很多纤维状的长根。9-48厘米高的茎，直立，并非根在节上，具0.2-0.4毫米贴伏非腺状毛状体和很少开展腺毛0.3-0.4毫米。
托叶披针形，清楚。 叶对生 叶柄有0.2-0.5毫米的反折贴伏的非腺毛和有时具0.4-0.5毫米开展的腺毛；叶片1.7-6.2厘米，掌状半裂，主要凹缺/中间段长的比率=0.72-0.84，具贴伏的非腺状柔毛；
裂片5，菱形，基部宽2.5-8.8毫米，上半部6-15裂，次凹缺/中间段长的比率=0.19-0.31。小聚伞花序单生，2花；花序梗4.1-14 (-23)厘米。花梗0.1-8.3厘米，具0.2-0.5毫米反折具钩的非腺状毛，并通常具0.2-0.6毫米开展腺毛；
小苞片披针形。萼片(8.4-)9-10.3(-11.3)毫米， 短尖头0.7-1.9(-2.5)毫米， 花瓣略带紫色，(1.6-)1.8-2.8厘米，直立到开展，两面无毛，基部具缘毛，先端微缺具0.3-1.4毫米凹槽。
花丝带粉红色，披针形具宽三角形基部和突然狭窄的先端，除了下半部具0.1-0.3毫米纤毛外无毛；带褐色的花药干燥时，2.1-2.9毫米蜜腺5，半球形，背面无毛，先端具一块毛状体的多孔软岩。
柱头干时紫色。果3.4-4厘米，发育完全时直立，带有白色透明具腺毛和短柔毛。种子 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.
产地生境
Subalpine and alpine meadows; 2200-3100 m. Xinjiang (Tian Shan) [Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan].
亚高山和高山草甸；海拔2200-3100米。新疆(天山) [哈萨克斯坦，吉尔吉斯斯坦，塔吉克斯坦，土库曼，乌兹别克 ].
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是在花丝有宽三角形基部的所有种中，唯一一个有长且具微缺花瓣的种。Geranium sophiae Fedorov 是乌兹别克Fergana Range的一个了解不多的特有种，它也有长且具微缺的花瓣。然而，它的叶片（包括先端具3（-5）深裂的倒三角形的中央裂片）与G. saxatile大不相同。