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Distribution of plastid DNA variation within and among populations of Cypripedium calceolus, estimated by Analysis of Molecular Variance (AMOVA)
| Source of variation | Sums of squares | Variance components | d.f. | Variation (%) | F-statistic | P* |
|---|---|---|---|---|---|---|
| Among populations | 24·5 | 0·244 | 8 | 17·5 | 0·175 | <0·001 |
| Within populations | 84·7 | 1·145 | 74 | 82·5 |
* The significance threshold was determined by 10 000 permutations of haplotypes among populations.
