TrapaL.菱属(拉丁学名:Trapa L.)桃金娘目,菱科一年生浮水或半挺水草本植物,根二型,即除吸收根外,尚有一种含叶绿素、沉于水中的同化根排列于叶柄基部的两侧;叶菱形,旋叠状,突出水面,边缘有小锯齿,叶柄膨大,海绵质;花小,白色,腋生,单生;有时具刺;花盘波状;子房半下位,胚珠单生,下垂;果革质,有角。 约30种,广布于东半球,中国约5种,中国均产之,其中菱T.bicornisOsbeck果实含丰富的淀粉,供食用。
本论文研究了从浙江省宁波市宁海县岔路镇第三系嵊县组第二沉积层中采集的多枚菱属植物化石。
This thesis researched some fossil fruits of Trapa L. which were found in the Miocene of second deposition layer of the Shengxian Formation, Ninghai, Zhejiang Province.
目的研究我国特有属植物菱叶紫菊的化学成分。
AIM To investigate the chemical constituents from the whole plant of the endemic plant Notoseris rhombiformis Shih.
本发明公开了一种菱镁热压复合板,属新型板材领域。
The invention discloses a magnesite hot pressing composite board, belonging to the field of novel board materials.
应用推荐