The matrix incompatibility count (MIC, the number of incompatible character states) after sequential removal of genotypes that contribute most to overall MIC at (A) for the macro-sampled populations and (B) for the micro-sampled populations. Populations are (A) Cascade, Dandahra, Mulligan's Hut (Mull), Washpool (Wash) and Swamp; (B) Cascade (Cas) neighbourhoods NH1 and NH2, Cascade Walk (CasW) NH 3, Mulligan's Hut (Mull) NH4 and NH5. For the Cascade Walk NH3 analyses, the sample was split in two to give 2 × n = 28 plants to even the sampling among neighbourhoods. SI = plants are self-incompatible; SC = plants are self-compatible; sterile = flowers male and female sterile.