Baron Karel Zois was the younger brother of the much more prominent Žiga Zois. He was among the first to research the Alpine flora in Carniola. While plant collecting, he certainly had a happy hand as well as an eye for new species, which he did not describe himself, but sent to his botanical friends in Cologne and Vienna for identification. He generated a herbarium with about 2,100 sheets, on which plants are pasted. Only the Latin name of each plant is written on the labels. After him, Zois’s Violet (Viola zoysii) and Zois’s Bellflower (Campanula zoysii) were named. In his herbarium, the type specimen of Short-haired Sandwort (Moehringia villosa) has also been preserved.