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光萼黄耆 |
中文学名:光萼黄耆 拉丁学名:Astragalus lucidus Tsai et Yu in Bull. 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:蔷薇目 亚 目:蔷薇亚目 科:豆科 亚 科:蝶形花亚科 族:山羊豆族黄耆亚族 属:黄耆属 亚 属:华黄耆亚属 组:黑毛组 |
光萼黄耆(guāng è huáng qí,学名:Astragalus lucidus Tsai et Yu in Bull.)为豆科黄芪属的植物,是我国的特有植物。产四川西南部(木里)、西藏东部(波密、米林、林芝)。生于海拔2700-3500米的山坡林缘。 [1]
光萼黄耆形态特征
多年生草本。根粗壮,直伸。 茎多数,高约40厘米,具条棱,近无毛。
奇数羽状复叶,具21-33片小叶,长9-12厘米;叶柄长1-2.5厘米,向上逐渐变短;托叶叶状,离生,斜卵形,长12-14毫米,宽8-9毫米,先端钝尖,无毛;小叶长圆形至狭长圆形,长8-15毫米米,宽3-6毫米,先端钝圆或微凹,基部近圆形或宽楔形,具短柄,上面无毛,下面沿中脉和叶缘散生白色短柔毛。
总状花序生多数花,密集,花序轴长约2.5厘米,花后稍伸长;总花梗腋生,较叶短,散生白色和黑色短柔毛;苞片膜质,匙形或披针形,长3-5毫米,宽2毫米,边缘散生白色或黑色缘毛;花梗长1-2.5毫米,连同花序轴密被黑色柔毛;花萼钟状,长约6毫米,外面无毛,萼齿在下边的线形,长约3毫米,上边的卵形,长约1.5毫米,内面密被黑色柔毛;小苞片2,宿存。
花冠淡黄色,旗瓣倒卵形,长约11毫米,先端微凹,基部渐狭,翼瓣较旗瓣稍短,瓣片长圆形,瓣柄与瓣片近等长,龙骨瓣与翼瓣近等长,瓣片半卵形,瓣柄与瓣片近等长;子房无毛,具短柄。 花期7月。 [2]
Astragalus severzovii Bunge in Mem. Acad. Sci. St. Perersb. VII. 15 (1): 54. 1869; Gontsch. in Kom. Fl. USSR 12: 170. 1946; Golosk. in Pavl. Φπ. Казахст. 5: 132. 1961.
Plants 20-35 cm tall, acaulescent or shortly caulescent, glabrous except for ovary or sparsely white hairy. Stem, if present, up to 7 cm. Leaves 12-35 cm; stipules 10-20 mm, free from petiole, glabrous; petiole 4-8 cm, at base up to 2 mm thick, like rachis glabrous or loosely covered with spreading hairs 1-2 mm; leaflets in 10-15 pairs, ovate, 8-30 × 5-22 mm, glabrous or at margins and abaxially at midvein sparsely covered with spreading hairs ca. 1 mm, apex rounded to very shortly acumi-nate. Racemes very loosely 5-7-flowered; peduncle 0.5-2 cm; bracts 5-12 mm, glabrous or loosely hairy. Calyx 11-13 mm, glabrous or with a few spreading hairs at teeth; teeth unequal, 3-5 mm. Petals yellow or greenish yellow; standard oblong to elliptic, 24-25 × 8-9 mm, apex emarginate; wings 20-22 mm; keel 17-18 mm. Ovary with a stipe 1-1.5 mm, hairy. Legumes ellipsoid, ca. 20 mm, ca. 10 mm high.
● Xinjiang.
The Chinese record of Astragalus sewertzowii Bunge from Xin-jiang (FRPS 42(1): 210. 1993) is possibly based on a misidentification of A. psilosepalus. Astragalus sewertzowii is not known to occur in China.The Chinese record of Astragalus sewertzowii Bunge from Xin-jiang (FRPS 42(1): 210. 1993) is possibly based on a misidentification of A. psilosepalus. Astragalus sewertzowii is not known to occur in China.
光萼黄耆生长环境
生长于海拔2700-3500米的山坡林缘。
光萼黄耆分布范围
模式标本采自四川木里。