关键词: 荸荠属, 果皮, 微形态特征

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