Hieracium murorum subsp. austrosilvularum P.Rossi & Zahn

Fainelli, Federico, Gottschlich, Günter & Orsenigo, Simone, 2024, Nomenclatural notes on some names in the Hieracium tenuiflorum group (Asteraceae) of the Alps, Phytotaxa 645 (2), pp. 131-148 : 133

3. Hieracium murorum subsp. austrosilvularum P.Rossi & Zahn in Zahn (1934: 483)

Ind. loc.:—“Alpen von Lecco: Alpe Conghed [Colonghelli] im Val Monastero bei Abbadia! Mte Palmo [Pelmo] ob Pieve di Cadore 1300 m (Pampanini)”.

Remarks:— Zahn (1934) published this taxon with a diagnosis (“Blätter wie silvularum oder grandidens (äussere z. T. klein, oval, gezähnelt), aber nur sehr kurz behaart; Stengel ±. dünn, wenigköpfig; Aeste 1–3, entfernt; Akladium 15–40 mm; Kopfstiele (sehr dünn) und Hülle (7–8 mm, zylindrisch, dunkelgrün, wenig flockig) nur kaum mässig- und kurz behaart und -drüsig; Schuppen schmal, spitzlich bis sehr spitz“ = “Leaves like silvularum or grandidens (outer partly little, ovate, denticulate), but only with very short simple hairs, stem ± thin, with few capitula; branches 1–3, remote; acladium 15–40mm; peduncles (very thin) and involucrum (7–8 mm, cylindrical, dark green, with sparse stellate hairs) only with few to subdense and short simple and glandular hairs; phyllaries narrow, subacute to acute”; and mentioned two localities: (Lecco Alps) Alpe Colonghelli (in the protologue the wrong name Alpe Conghed was indicated) in Val Monastero in Abbadia and Mount Pelmo (in the protologue the wrong name Palmo was indicated) Pieve di Cadore 1300 m, referring to a specimen collected by Pampanini. Unfortunately, we could trace no specimen referred to this taxon in PAV where the herbarium of Pietro Rossi is housed. We supposed that this specimen (as occurred to the others) went lost or was completely damaged by insect infestation. We looked also in FI and PAD, where Pampanini’s collections are hosted without success. In FI we could trace a single specimen of H. tenuiflorum in the area of Cadore. However, the information on the label does not match with that reported by Zahn (“boschi tra le acque a San Vito del Cadore, alt 1400 m). Moreover, there is no evidence that this specimen has been seen by Zahn, since the label bears only handwritten notes of the Italian hieraciologist Saverio Belli (“ Hieracium tenuiflorum forma”). Although the leaves of the specimens correspond to Zahn’s description (i.e. outer ones partly little, ovate, denticulate), we could not designate this specimen as a lectotype. We looked for a neotype, but unfortunately there seems to be no other collections referred to this taxon, except for the two specimens cited by Zahn.

Current name:— Hieracium tenuiflorum subsp. austrosilvularum (P.Rossi & Zahn) Gottschl. in Raab-Straube & Raus (2013: 157).