织梦CMS - 轻松建站从此开始!

花卉图片网

当前位置: 主页 > 草本花卉 >

四棱猪屎豆Crotalaria tetragona

时间:2018-08-14 08:44来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):四棱猪屎豆 学名( Scientific Name ): Crotalaria tetragona Roxb. ex Andr. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Crotalaria esquirolii H. Lv. Crotalaria obtecta Grah
中文名(Chinese Name):四棱猪屎豆
学名(Scientific Name):Crotalaria tetragona Roxb. ex Andr.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Crotalaria esquirolii H. Lév.  Crotalaria obtecta Graham
科属(Family & Genus):蝶形花科,Fabaceae猪屎豆属
形态特征(Description):多年生高大草本,高达2米;茎四棱形,被丝质短柔毛。托叶线形或线状披针形,长4-5毫米;单叶,叶片长圆状线形或线状披针形,长10-20 (-25) 厘米,宽1-2.5厘米,先端渐尖,基部钝或圆,两面被毛,尤以下面毛更密,叶柄短。总状花序顶生或腋生,有花6-10朵;苞片披针形,长4-6毫米,先端渐尖,小苞片线形,长3-4毫米,生花梗中部以上;花梗长1-1.5厘米;花萼二唇形,长1.5-2.5厘米,二唇深裂近达基部,萼齿披针形,弯曲成半月形,先端渐尖;花冠黄色,旗瓣圆形或长圆形,长约2.5厘米,基部具二枚胼胝体,翼瓣长椭圆形或披针状椭圆形,长约2厘米,龙骨瓣与旗瓣等长,具喙,伸出萼外;子房无柄。荚果长圆形,长4-5厘米,密被棕黄色茸毛;种子10-20颗。花果期9月至翌年2月。
分布(Distribution):产广东、广西、四川、云南。生海拔500-1600米山坡路旁及疏林中。印度、尼泊尔、不丹、缅甸、越南、印度尼西亚也有。
用途(Use):引自植物志英文版:FOC Vol. 10 Page 107, 111
Crotalaria tetragona Roxburgh ex Andrews, Bot. Repos. 9: t. 593. 1812.
四棱猪屎豆 si leng zhu shi dou | Fabaceae  | Crotalaria
Crotalaria esquirolii H. Léveillé.
Herbs, erect, to 2 m tall. Branches 4-angled, silky pubes­cent. Stipules linear to linear-lanceolate, 4-5 mm. Leaves sim­ple; petiole ca. 4 mm; leaf blade oblong-elliptic to linear-lan­ceolate, 10-20(-25) × 1-2.5 cm, both surfaces finely appressed pubescent, midvein abaxially pale and prominent, base broadly cuneate to obtuse, apex acute to slightly acuminate. Racemes terminal or leaf-opposed, 6-10-flowered; bracts lanceolate, 4-6 mm. Pedicel 1-1.5 cm; bracteoles inserted at apex of pedicel, linear, 3-4 mm. Calyx 2-lipped, 1.5-2.5 cm, divided to near base, densely brown pilose; abaxial lobes narrowly triangular-lanceolate, connate for ca. 1/4 of length, 4-5 mm wide at base; adaxial lobes similar, divided to near base. Corolla yellow; stan­dard suborbicular to oblong, ca. 2.5 cm, base with 2 appen­dages; wings narrowly elliptic to lanceolate-elliptic, ca. 2 cm; keel ± as long as wings, broad and rounded, abaxial margin woolly, beak long, twisted, and exserted beyond calyx. Legume oblong, 4-5 cm, 10-20-seeded, [dark brown tomentose or] densely brownish yellow pubescent. Fl. Sep-Nov, fr. Dec-Feb.
Sparse forests, along trails; 500-1600 m. Guangdong, Guangxi, Sichuan, Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, Nepal, ?Philippines, Thailand, Vietnam].



(责任编辑:徐晔春)
织梦二维码生成器
顶一下
(2)
66.7%
踩一下
(1)
33.3%
------分隔线----------------------------
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
用户名: 验证码:点击我更换图片