Table 2.

Patterns of marker bands

	CE	CL	XP	SP	GR
CE		7	5	1	2
CL	8		1	7	5
XP	0	0		3	1
SP	11	1	0		2
GR	8	1	0	6

Upper diagonal: pattern of marker bands exclusively shared by pairs of taxa in hybrid complex that do not reflect a pattern of introgression as inferred from distribution of four molecular data sets (allozymes, rDNA and cpDNA restriction-site variation, and ISSR markers) across all populations. Introgression was inferred when marker bands were shared among sympatric populations or, in the case of P. centranthifolius and P. spectabilis, when P. × parishii also shared a band found in either parental species. Lower diagonal: pattern of marker bands exclusively shared by pairs of taxa in hybrid complex that reflect a pattern of introgression as inferred from distribution of markers in populations and correlation with three other molecular data sets. Abbreviations same as in Table 1.