Abstract: Nutlet surfaces of 8 species and 1 variety of the genus Eleocharis (Cyper-aceae)from Fujian were examined by light microscope and scanning electron microscope. According to our observations, their overall shape may be obovoid, broad obovoid, obovoid ellipsoid, long ellipsoid and oblong under light microscope, and the surface features under scanning electron microscope may be grouped into two types:reticulate, mimic reticulate, the former of which may be divided into two subpatterns. The result shows that the fruits of Eleocharis exhibit a complex and high morphological and micro-morphological diversity. The micromorphological features of nutlets provide most valuable criteria for classification between species, but it is of less significance at subspecies level.

Key words: Eleocharis, Nutlet surface, Micromorphological characteristics

摘要： 本文报道了在立体显微镜和扫描电子显微镜下对福建荸荠属8种、1变种植物果实表皮微形态特征的观察结果。根据果皮纹饰的不同,可分为两种类型:网状纹饰、拟网状纹饰;荸荠属植物果实表皮微形态特征具有丰富的多样性,表型可塑性小,不同类群之间具有明显的种间差异。观察结果表明:荸荠属果实表皮微形态特征是该属分类与系统研究中不可忽视的性状。

关键词: 荸荠属, 果皮, 微形态特征