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柴达木黄耆 |
中文学名::柴达木黄耆 二名法::Astragalus kronenburgii B. Fedtsch. ex kneuck. var 界 ::植物界 门 ::被子植物门(Magnoliophyta) 纲 ::双子叶植物纲(Magnoliopsida), 又称木兰纲。 亚纲::蔷薇亚纲(Rosidae) 目 ::豆目(Fabales) 科 ::豆科(Leguminosae sp.) 亚科::蝶型花亚科(Faboideae) 族 ::山羊豆族、黄耆亚族 属 ::黄耆属(Astragalus Linn.), 也称:黄芪属。 种 ::古利恰黄耆 亚种::柴达木黄耆(变种) 分布::分布于中国大陆的 |
柴达木黄耆,(chái dá mù huáng qí,学名 Astragalus chaidamuensis (S. B. Ho) Podlech et L. Z. Shue,异名:Astragalus kronenburgii var. chaidamuensis ), 界: 植物界 Plantae 门: 被子植物门 Magnoliophyta 纲: 双子叶植物纲 Magnoliopsida (未分级) I类真蔷薇分支 eurosids I 目: 豆目 Fabales 科: 豆科 Fabaceae 属: 黄芪属 Astragalus 种: 古利恰黄耆 A. kronenburgii 变种: 柴达木黄耆 A. k. var. chaidamuensis。
形态特征
多年生草本,被灰白色伏贴毛,高10-20厘米。 茎短缩,长约1厘米,木质化,数个形成疏丛状。
羽状复叶有7-11片小叶,长3-8厘米;叶柄与叶轴等长,或为叶轴长的1/3;托叶基部与叶柄贴生,上部三角形,草质,被白色长毛;小叶狭披针形,长7-15毫米,宽1-1.5毫米,先端尖,两面被灰白色或近银白色伏贴毛。
总状花序生3-8花,排列稍密集成伞房状,后渐伸长;总花梗比叶长1.5-2倍,长7-15厘米;苞片披针形,较花梗长,被黑白色混生毛;花萼管状,长3-10毫米,被黑白色混生毛,有时仅在萼齿上有黑色毛,萼齿狭线形,长约为萼筒的1/3;
花冠蓝紫色,旗瓣长16-20毫米,瓣片菱状长圆形,先端微缺,中部微缢缩,有极短的瓣柄,翼瓣长13-17毫米,瓣片长圆形,先端2裂,瓣柄与瓣片等长,龙骨瓣较翼瓣短,先端微尖,瓣片与瓣柄等长;子房近无柄,被微毛。
荚果未见。 花期7月。[1]
var. chaidamuensis S. B. Ho in Bull. Bot. Res 3 (1): 42. f. 1. 1983.
Astragalus kronenburgii B. Fedtschenko var. chaidamuen-sis S. B. Ho, Bull. Bot. Res., Harbin 3(1): 42. 1983.
Plants ca. 18 cm tall, nearly acaulescent, caespitose, vege-tative parts covered with medifixed, appressed, white hairs 0.3-1 mm. Stems branched at base, parts of current year, if developed, up to 0.5 cm, densely hairy. Leaves of sterile shoots 1-2 cm; stipules ca. 2 mm, densely hairy; petiole 0.5-1 cm, with 1 or 2 pairs of small leaflets 2-3 mm. Leaves of flowering shoots 3-7 cm; petiole 1-2 cm, like rachis densely hairy; leaf-lets in (2 or)3 or 4 pairs, linear, 10-15 × 1-1.5 mm, both sur-faces ± densely hairy, apex acute. Racemes subumbellate, 3-7-flowered; peduncle 5-14 cm, loosely to rather densely white hairy; bracts 1-2 mm, sparsely furnished with mostly basifixed white and black hairs. Calyx ca. 10 mm, loosely to rather densely covered with medifixed, appressed, white hairs 0.5-1 mm and mostly slightly shorter black hairs; teeth 2.2-3 mm. Petals probably yellow; standard elliptic, 15-17 × 6-7 mm, apex emarginate; wings ca. 15 mm, limbs deeply incised; keel ca. 12 mm. Ovary with a stipe ca. 2 mm, linear, white hairy. Legumes unknown.
● 3000-3300 m. Gansu, Qinghai, ?Xinjiang.
The Chinese record of Astragalus nematodes Bunge ex Boissier from Xinjiang (FRPS 42(1): 264. 1993) is possibly based on a misiden-tification of A. chaidamuensis. Astragalus nematodes is not known to occur in China.The Chinese record of Astragalus nematodes Bunge ex Boissier from Xinjiang (FRPS 42(1): 264. 1993) is possibly based on a misiden-tification of A. chaidamuensis. Astragalus nematodes is not known to occur in China.
生长环境
主要生长在海拔3000米的冲积扇地及河滩石隙中。 [2]
分布范围
主要生长在甘肃西部(阿克塞)、青海(德令哈、大柴旦)。模式标本采自青海海西德令哈。[3]
本种提示
本变种与原变种不同处在于托叶草质,被白色长毛;苞片被黑白色混生毛;花序短,仅具3-8花;萼筒口部不偏斜。[4]
参考来源
- ↑ 《中国植物志》 第42(1)卷 (1993) >> 268页 PDF >> 柴达木黄耆 Astragalus kronenburgii var. chaidamuensis
- ↑ 柴达木黄耆(变种) .中国植物物种信息数据库[引用日期2013-01-10]
- ↑ 柴达木黄耆Astragalus kronenburgii B. Fedtsch. ex Kneuck. var... 种中文名:柴达木黄耆种拉丁名:Astragalus kronenburgii B. Fedtsch. ex Kneuck. var. chaidamuensis S.B.Ho科中文名:豆科科拉丁名:Leguminosae...
- ↑ 柴达木黄耆, 植物智, 2020-01-18