The anatomical structures and ecological adaptations of Kandelia candel and Bruguteragymnorrhiza propagules were shown in this paper

The results showed that several peculiar struc-tures happened in mangrove propagules

for example

the differentiation of cotyledon.the endo-genecy of radicle and the existing of pericycle in hypocotyl etc。

which have never been found inother dicotyledons.It was demonstrated that the structural peculiarities of propagules and the phe-nomenon of vivipary in mangrove were the result of adaptation to the relatively saline habitat。The studies also exhibited convergent adaptation on both plant propagules。