On the pass summit, there is a transitional mire: in the mud sedge bog ("Caricetum limosae" plant community) grow, in addition to the mud sedge ("Carex limosa", endangered) which gives the name of the plant community, also the lesser twayblade ("Neottia cordata") and the dwarf birch ("Betula nana"). In the fen south of the Schwarzsee, a brown sedge marsh ("Caricetum fuscae subalpinum" community) with the endangered species common sedge (or brown sedge, "Carex nigra"), round-leaved sundew ("Drosera rotundifolia") and bastard sundew ("D." x "obovata"), as well as dwarf birch. There is a vale mire on the Kornock. Aside from the dominant deer-hair sedge ("Trichophorum cespitosum"), there are alpine bartsia ("Bartsia alpina"), alpine butterwort ("Pinguicula alpina") and bog-bean ("Menyanthes trifoliata").