Hidden hybridization and habitat differentiation ina Mediterranean macrophyte, the euryhaline genus Ruppia

Lise Beirinckx, Bram Vanschoenwinkel & Ludwig Triest
In many aquatic plant taxa, classification and identification based on morphology has always been difficult. Molecular markers revealed that the complexity in several of these aquatic taxa could be addressed to recurrent hybridization events and cryptic species diversity. The submerged macrophyte genus Ruppia is one of these aquatic genera with a complex taxonomy due to the absence of clear distinguishable traits and several hybridization events. Two species co-exist throughout Europe, R. maritima and R. spiralis...
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