Cirsium × juratzkae (Cirsium greimleri × heterophyllum) is a hybrid between C. greimleri and C. heterophyllum.
It is known from 58 herbarium specimens as of 2020.
Distribution
It is found in the Rottenmann and Wölz Tauern, Schladming Tauern, Seckau Tauern, and Lavanttal Alps.
Description
Although the growth is more similar to C. heterophyllum and the flowers more similar to C. greimleri, the leaves of the hybrids are intermediate between both parents, with significant variation. But two forms are known.
The description of Reichardt:
History
It was named after . It was described as one of the most "stately and beautiful" hybrids by Heinrich Wilhelm Reichardt, who identified it in 1861 near Bretstein and near Breitenau am Hochlantsch, both at 1400 m.
See also List of Cirsium species
References Text of Public Domain references available in article code.
Further reading Schulz, Carl Heinrich. Cichoriotheca, i.e. Cichoriaceae, praec. Galliae et Germaniae, exsiccata.