光萼黃耆檢視原始碼討論檢視歷史
光萼黃耆 |
中文學名:光萼黃耆 拉丁學名:Astragalus lucidus Tsai et Yu in Bull. 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:薔薇目 亞 目:薔薇亞目 科:豆科 亞 科:蝶形花亞科 族:山羊豆族黃耆亞族 屬:黃耆屬 亞 屬:華黃耆亞屬 組:黑毛組 |
光萼黃耆(guāng è huáng qí,學名:Astragalus lucidus Tsai et Yu in Bull.)為豆科黃芪屬的植物,是我國的特有植物。產四川西南部(木里)、西藏東部(波密、米林、林芝)。生於海拔2700-3500米的山坡林緣。 [1]
光萼黃耆形態特徵
多年生草本。根粗壯,直伸。 莖多數,高約40厘米,具條棱,近無毛。
奇數羽狀複葉,具21-33片小葉,長9-12厘米;葉柄長1-2.5厘米,向上逐漸變短;托葉葉狀,離生,斜卵形,長12-14毫米,寬8-9毫米,先端鈍尖,無毛;小葉長圓形至狹長圓形,長8-15毫米米,寬3-6毫米,先端鈍圓或微凹,基部近圓形或寬楔形,具短柄,上面無毛,下面沿中脈和葉緣散生白色短柔毛。
總狀花序生多數花,密集,花序軸長約2.5厘米,花後稍伸長;總花梗腋生,較葉短,散生白色和黑色短柔毛;苞片膜質,匙形或披針形,長3-5毫米,寬2毫米,邊緣散生白色或黑色緣毛;花梗長1-2.5毫米,連同花序軸密被黑色柔毛;花萼鍾狀,長約6毫米,外面無毛,萼齒在下邊的線形,長約3毫米,上邊的卵形,長約1.5毫米,內面密被黑色柔毛;小苞片2,宿存。
花冠淡黃色,旗瓣倒卵形,長約11毫米,先端微凹,基部漸狹,翼瓣較旗瓣稍短,瓣片長圓形,瓣柄與瓣片近等長,龍骨瓣與翼瓣近等長,瓣片半卵形,瓣柄與瓣片近等長;子房無毛,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.
光萼黃耆生長環境
生長於海拔2700-3500米的山坡林緣。
光萼黃耆分布範圍
模式標本采自四川木里。