Additional file 2.
Figure S2 Number and proportion of ITS-VT number of each genus. (a) among continents, (b) among biogeographical realms, (c) among climatic zones and between Laurasia and (d) Gondwana. The number in parenthesis was total number of ITS-VTs. (PDF 212 kb).
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Yang et al. BMC Evolutionary Biology 2012 12:50 doi:10.1186/1471-2148-12-50