Jurij (Georg) Dolliner was born in 1794 in Radeče by Zidani most. He went to study in Vienna and became a physician, but was also involved in botany. At first, he studied the flora of Lower Austria, but later returned to Carniola, to Postojna and Idrija, where he died in 1872. He collected plants on his botanical excursions for a herbarium collection, which is preserved in the Natural History Museum of Slovenia.
During his years in Vienna, he often visited his birthplace and during the visits devoted himself to botany. In 1826, in the vicinity of Radeče on Castle Hill above Svibno above the Sopota valley, he found a still unknown yellow flowered species from the treacle mustard genus. It was growing in rocky cracks and among grass below the ruined castle. He called the new species after his birthplace.
Carniolan mustard is in the Cruciferae family. It is bi-annual, 10-60 cm high. It has more or less squat basal leaves, they are often pinnatisect, and are still green at flowering time. The inforescence is for the most part simple. The petals are yellow, approximately 2 cm long. The flowers do not have a strong smell. The fruit is a siliqua.
It is classified on the Red List of threatened ferns and seed bearing plants in Slovenia among rare species. It grows on scrub-covered, rocky slopes on Castle Hill above Svibno, on Sveta gora in the Sava valley and in the Gorjenci. It is found in neighbouring Croatia in Istria, on Učka.
