4. Hieracium murorum [subsp. tenuiflorum] forma bifidiceps Furrer & Zahn in Furrer (1929: 229)

Ind. loc.:—“Kastanienwald, Aringo bei Montereale, ca. 1100 m; Mte. Pelato (ob Tossicia) NE-Hang um 1100 m ”.

Type:—[ITALY. Abruzzo, Prov. AQ] “Kastanienwald Aringo bei Montereale, um 1100 m; 8 Jun 1928, E. Furrer ” (lectotype, designated here: Z-000238290 [image!] by United Herbaria Z+ZT / CC BY 4.0‘ image of the lectotype available at https://www.herbarien.uzh.ch/) .

Remarks:—This forma was proposed by Furrer & Zahn in Furrer (1929) to distinguish individuals with few, bigger capitula and sub-furcate or weakly paniculate synflorescence. In Z/ZT we could trace a single specimen collected by Furrer in chestnut woods in Aringo (Abruzzo) in 1928 that bears an original label handwritten by Zahn. The description on the label perfectly matches with the protologue of the species published by Furrer.

Current name:— Hieracium tenuiflorum .