Very important for plant conservation in Retezat are over 90 endemic taxa of the 127-400 total endemic taxa accepted by different authors for Romania. The first reported endemic plant is Draba dorneri, discovered in 1858 by Heuffel. Here can be found 130 plants rare or vulnerable listed on the "Red List of higher plants in Romania" published in 1994.
In florogenetic terms Retezat Mountains are the genetic center for the genus Hieracium, which includes 257 taxa here, some endemic as Hieracium borzae, Hieracium nigrilacus, and that for the genus Poa, which includes 31 taxa. Also, a whole series of taxa and infra-taxa have their place here, like Barbarea lepuznica, Centaurea pseudophrygia ratezatensis, Oxytropis jacquinii retezatensis, Hypochoeris maculata var. carpatica, Festuca rupicola var. retezatensis.
Image from here