Physarum bivalve 1, Opensplijtend kalkkopje, Saxifraga-Foto Fitis-Sytske Dijksen Physarum bivalve 2, Opensplijtend kalkkopje, Saxifraga-Foto Fitis-Sytske Dijksen Physarum bivalve 3, Opensplijtend kalkkopje, Saxifraga-Foto Fitis-Sytske Dijksen