中国水鳖科（Hydrocharitaceae）植物的果皮微形态特征

应用扫描电镜对国产水鳖科6属植物的果皮微形态特征进行了初步的观察。结果表明水鳖科各属植物在果皮表面纹饰及表皮细胞形态，径向壁和横向壁凸出与否等特征上存在差异，可以作为属间分类的依据之一。从果皮微形态特征来看，水鳖属和海菜花属差异很大，支持将它们分别作为不同的族处理的观点，而水筛属和苦草属则较为近缘。果皮微形态下的观察结果表明水鳖科和泽泻科植物在果皮表面细胞形态，径向壁明显凸出等方面十分相似，因而支持了水鳖科与泽泻目近缘的观点。

Micromorphological Study of Fruit Coats of Hydrocharitaceae from China

The micromorphological characters of fruit coats of Hydrocharitaceae from China were examined under SEM. The result indicated that sculpture of fruit surface, shape of epidermal cells and characters of radical cell wall were taxonomically useful for the identification of genera and division of some tribes. Micromophological evidence from fruit coast indicated that Hydrocharitaceae and Alismatlaes were systematically related.