Fig. 2From: Demographic history and genetic differentiation of an endemic and endangered Ulmus lamellosa (Ulmus)The chronogram for Ulmus lamellosa based on BEAST analysis of ITS sequences. Positions of the fossil calibrations were indicated by a five-pointed star. Divergence times were labeled on each node. Blue bars at nodes represented the 95% highest probability density (HPD) for the age of that nodeBack to article page