927 plant species have so far been identified by the biotope mapping at Kalkalpen National Park . This corresponds to around a third of all plant species found in Austria! Particular rarities include 42 wild orchid species, the largest and probably best known of which is the yellow lady's slipper.
![Lady's slipper Cypripedium calceolus Cluster of Frauneschuh orchids blooms on the banks of a stream](/assets/images/d/HEADER_Frauenschuh_085-Herfried-Marek-NP-Frauenschuh_Kalkalpen-Hinterer-Rettenbach-HMR_6264-dfq19kf0r6s071k.jpg)