Southwest Portugal is rich in Cistus species and its hybrids. A global review of all sixteen Cistus nothotaxa found in Southern Portugal is provided with a nomenclatural update and the typification of previous described nothotaxa (Cistus × daveauanus). A new hybrid is described (C. × aljezurensis nothosp. nov.) relating the introgression between, C. crispus and C. inflatus.
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Schwarzer et al. (2024) studied this question.
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