Sex ratio inClematis gentianoidesDC.

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Abstract
From 20 wild plants of the dioecious Tasmanian endemic, Clematis gentianoides, 1 941 seeds gave 367 males and 292 females. The trend towards an excess of males was not heterogeneous in the 20 progenies, 2 of which were significantly different from equality. The proportions of male plants could not be definitely related to percentage germination or death of seedlings. Earlier and later germinating groups had a similar sex ratio. Male plants produced more flowers than females and tended to flower earlier in age and earlier in the season. The heterogametic sex is not known.