Dioecious plant populations possess sex ratio and gender distribution of individuals, which are important for individual reproduction, population viability, natural regeneration and maintenance of genetic diversity. This is particularly true for rare and endangered dioecious ones. In China, Taxus fuana is among the 120 Wild Plant with Extremely Small Populations (WPESP) and observed only in the Jilong County of Tibet Autonomous Region. However, little has been reported about its population ecology, especially about its sex ratio and gender spatial distribution pattern of individuals. We did a field investigation for six T. fuana populations in Jilong and recorded 1,651 male and 1,231 female individuals in total, whereby its sex ratio and gender spatial distribution pattern of individuals per population were analyzed. Our results showed that Jipu

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