亚东点地梅查看源代码讨论查看历史
亚东点地梅 |
中文名:亚东点地梅 拉丁学名:Androsace hookeriana Klatt 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:合瓣花亚纲 目:报春花目 科:报春花科 族:报春花族 属:点地梅属 分布区域:西藏 |
亚东点地梅(yà dōng diǎn dì méi),学名 Androsace hookeriana Klatt,多年生草本,植株由着生于根出条上的莲座状叶丛形成疏丛。根出条节间长2-3厘米,幼时枣红色,疏被短柔毛,老时深紫褐色,近于无毛。产于西藏南部(亚东、帕里)。分布于不丹、尼泊尔。 [1]
亚东点地梅形态特征
多年生草本,植株由着生于根出条上的莲座状叶丛形成疏丛。根出条节间长2-3厘米,幼时枣红色,疏被短柔毛,老时深紫褐色,近于无毛。
叶3型,外层叶披针形,长2.5-4毫米,先端渐尖,干膜质,无毛;中层叶匙形至舌形,长3-6毫米,宽1-1.8毫米,先端钝,薄革质,黄绿色或褐色;
腹面无毛,背面近先端具少数柔毛,边缘具缘毛;内层叶少数,卵状椭圆形至倒卵圆形,长5-8毫米,宽4-8毫米,先端钝或浑圆,基部骤然收缩变狭,两面疏被柔毛;
叶柄纤细,通常稍短于叶片;生长于新根出条端的叶4-5枚,通常近圆形,具较长的柄。花葶直立,高4-8厘米,疏被柔毛;伞形花序4-8花;苞片线形,长3-5毫米,疏被毛;
花梗长6-10毫米,疏被短柔毛;花萼杯状,长2.5-3毫米,疏被柔毛,分裂近达中部,裂片卵形,先端钝,密被缘毛;花冠粉红色,直径达6毫米,裂片阔倒卵形,全缘。花期7月。
Herbs perennial, laxly cespitose. Shoots initially deep reddish brown, sparsely pubescent, becoming dark purple, glabrescent, internodes 2--3 cm. Leaves trimorphic. Outer leaves sessile, lanceolate, 2.5--4 mm, early deciduous, glabrous. Medial leaves yellowish green or brown, ligulate, 3--6 X 1--1.8 mm, thin leathery, ciliate, abaxially sparsely pubescent near apex, adaxially glabrous, apex obtuse.
Petiole of inner leaves slightly shorter to longer than leaf blade; leaf blade ovate-elliptic to suborbicular, 8--30 X 4--8 mm, sparsely pubescent, base abruptly constricted, apex obtuse to rounded. Leaves of sterile rosettes 4 or 5; petiole longer; leaf blade subrounded at apex. Scapes erect, 4--8 cm, sparsely pilose; umbels 4--8-flowered; bracts linear, 3--5 mm.
Pedicel 6--10 mm, pubescent. Calyx 2.5--3 mm, sparsely pubescent, parted nearly to middle; lobes ovate, densely ciliate, apex obtuse. Corolla pink, ca. 6 mm in diam.; lobes broadly obovate, margin entire. Fl. Jul. 2n = 20.
亚东点地梅生长环境
生长于林缘岩石上。
亚东点地梅分布范围
分类文献
Androsace hookeriana Klatt in Linnaea 32: 293. t. 3. 1863; Hook. f. Fl. Brit. Ind. 3: 499. 1882; R. Knuth in Engl. Pflanzenr. 22 (IV-237): 187. 1905, p. p.; S. Gould in Hara et Williams, Fl. Pl. Nepal 3: 63. 1982; C. M. Hu et Y. C. Yang in Act. Phytotax. Sin. 24: 221. 1984.