[1] It was described in 1903 by Johann Kellerer and Franz Sündermann and was named after Tsar Ferdinand I of Bulgaria.

Petals reach a length of 7–9 mm and have an oblong obovate shape.

The fruits are bare linear pods, the seeds are brown.

[2] This plant is endemic to the Pirin mountain range of Bulgaria,[2][3] where it grows in the high mountain belt on calcareous rocky and stony terrains - rocky meadows, terraces and rock crevices.

[2] It is found at altitudes between 2,000 m and 2,800 m on the slopes of the summits of Vihren, Banski Suhodol, Bayuvi Dupki and Kamenitisa, Razlozhki Suhodol, the cirque Golemiya Kazan, and the Sredonosa ridge, all situated in northern Pirin, within the limits of Pirin National Park.