Hieracium balearicum Arvet-Touvet (1913: 157)

Ferrer-Gallego, P. Pablo, Mateo, Gonzalo, Rosselló, Josep A. & Sáez, Llorenç, 2021, Nomenclatural types of Hieracium (Asteraceae) species described from the Balearic Islands (Spain) and several related taxa, Phytotaxa 478 (2), pp. 201-215 : 204

Hieracium balearicum Arvet-Touvet (1913: 157)

≡ H. elisaeanum subsp. balearicum (Arv.–Touv.) Greuter (2007: 151) Type (lectotype, designated here):—[ SPAIN. Balearic Islands, Mallorca ], Balearium insula Majere, Puig mayor de Torella, 1000–1300

m, 8 June 1885, Porta & Rigo s.n. ( GRM code MHNGr.1914.45564!) ( Fig. 2 ); isolectotype: P barcode P04427940 ! (image available at https://science.mnhn.fr/institution/mnhn/collection/p/item/p04427940)

The protologue ( Arvet-Touvet 1913: 157) includes a very detailed description of this plant and the type locality “Hab. Espagne: Balearium insula Majore, in rupestribus montis Puig Mayor [Major] de Torellas [Torrella], solo calcareo, alt. 1000–1300 m (8 Jun. 1885 Porta et Rigo)”, followed by the comment “La plante trouvée sur la Sierra–Nevada par Porta et Rigo, Iter Hispan. nº 603, et rapportée également par Burnat, l. c. au phlomoides Froel. , appartient peut-être aussi au balearicum ? (non Vid.)”.

In the herbarium of Arvet-Touvet at GRM, there is an herbarium sheet that bears original material for the name H. balearicum , specifically a specimen that is part of the gathering cited in the protologue (MHNGr.1914.45564). This specimen is a syntype (see Art. 9.6 of the ICN; Turland et al. 2018) and comprises six plants, well-developed and preserved, with leaves and flowers, and two original labels. The first label, is a printed label of Porta and Rigo’s herbarium: “ex Herb: Alexis Jordan / Hieracium laniferum (Cav.?) Fries / Lausonii γ phlomoides Scheele in Pdr. fl. Hisp. / non! Arv.T. / Balericum insula Majore in rupestribus mt. Puig / mayor [Major] de Torella [Torrella] sol. calcar. 1000—1300 m.s.m. / 8. Jun. 1885 / Porta et Rigo”. The second label is handwritten by Arvet-Touvet, and is annotated as: “ Hier. balearicum A.–T. (Catal.) / ( H. phlomoides Burnat et Barbey : Voyage bot. / aux Baléares (1882) p. 28: Wilk. Inst. Balear. / p. 53; Barcelo: Flor. balear. p. 292 (non Froel.) / (Balear. Insul. Mallorca; Barranco de Soller [Sóller], ad / rupes vertic. alt. 2400’ 23 mai 1899 (Gandoger)” ( Fig. 2 ).

Pietro Porta (1832–1923) and Gregorio Rigo (1841–1922) explored the Balearic Islands (Mallorca) in 1885 as well as other localities of continental Spain and their exsiccata are preserved in many herbaria. In this sense, we have found a specimen at P, with barcode P04427940 that belong to the exsiccatum of Porta and Rigo and is a duplicate of the specimen MHNGr.1914.45564. The specimen P04427940 bears five well-preserved plants, four of these with capitula, and the same printed label that the sheet MHNGr.1914.45564.

We have been unable to locate any further original material in other consulted herbaria (e.g., BC, BRIX, FI, GZU, K, MA, NAP, PAD, TO, W, WU, etc; see Gottschlich 2007). Accordingly, we designate as the lectotype of the name H. balearicum the specimen at GRM .

Taxonomic remarks:— Hieracium balearicum has been confused with H. elisaeanum . In our opinion, the typification of these two names gives an adequate interpretation to consider H. balearicum as a separate species, based on several vegetative and reproductive characters (Sáez et al., unpublished, in prep.): the basal leaves of H. elisaeanum have shorter petioles, the leaves are usually less hairy on adaxial surface and the phyllaries have a different indumentum density: stellate hairs are rare or even absent (vs. dense in H. balearicum ) and glandular hairs are rare (vs. numerous in H. balearicum ).

Figures

FIGURE 2. Lectotype of Hieracium balearicum Arv.-Touv. in GRM (code MHNGr.1914.45564).—Image by courtesy of the Muséum d’Histoire Naturelle de Grenoble (Herbarium GRM), reproduced with permission.