Cirsium × stroblii (Cirsium greimleri × spinosissimum) is a hybrid between C. greimleri and C. spinosissimum.
3 herbarium specimens as of 2020.
Distribution
It is found only in the Rottenmann and Wölz Tauern, although the range overlap extends to nearby ranges.
Description
There are few specimens, but it is close in appearance to C. heterophyllum × spinosissimum, differing in having broader leaves with short lobes, without tomentose undersides.
The description of von Halácsy:
History
Identified by August von Hayek in the summer of 1906 from a specimen collected on the slopes of a ravine that feeds the Großer Bösenstein lake by Gabriel Strobl in 1867.Von Hayek 1907. "Gelegentlich einer Exkursion auf den Großen Bösenstein bei Trieben (Niedere Tauern, Steiermark) im Jahre 1867 entdeckte P. Gabriel Strobl (jetzt Direktor des Gymnasiums zu Admont)
See also List of Cirsium species
References