Table 3.

Mantel correlations between genetic distances and climatic and lithological differences among Iberian Stauracanthus populations. Results are shown for tests including populations of either all the species in the genus or only S. genistoides sensu lato, both over the total range of the genus’s distribution or just in the Iberian Peninsula. For climate and lithology, two correlation values are provided; the second is the correlation factor after accounting for the effect of inter-population spatial distance with a partial Mantel test (see text)

	Space		Climate		Lithology
Genetic distance	Total range	Iberian peninsula	Total range	Iberian peninsula	Total range	Iberian peninsula
Stauracanthus	0·24*	NS	0·28*/ns	NS	0·38**/0·40***	0·27*/0·27*
S. genistoides–spectabilis clade	NS	NS	NS	NS	NS	NS

NS, not significant.

^*P< 0·05;

^**P< 0·01;

^***P< 0·001.