Hieracium glanduliferum Hoppe subsp. glanduliferum (Asteraceae)

Astuti, Giovanni, Bartolucci, Fabrizio, Conti, Fabio, Cera, Beatrice, Giaco, Antonio, Orsenigo, Simone, Sandroni, Luca & Peruzzi, Lorenzo, 2021, Chromosome numbers for the Italian flora: 12, Italian Botanist 12, pp. 123-131 : 123

Hieracium glanduliferum Hoppe subsp. glanduliferum (Asteraceae)

Chromosome number.

2 n = 27 (Fig. 4 ).

Voucher specimen.

Italy. Emilia-Romagna. Ventasso (Reggio Emilia), Monte Prado (WGS84 44.252477N, 10.400372E), tra la sella e la vetta del Monte Prado, 1980 m, 25 July 2019, S. Orsenigo (PAV).

Method.

Squash preparations were made on root tips obtained from germinating seeds. Root tips were pre-treated with 0.4% colchicine for 3 hours and then fixed in Carnoy fixative solution for 1 hour. After hydrolysis in HCl 1N at 60 °C, the tips were stained in leuco-basic fuchsine for 7-8 minutes.

Observations.

Hieracium glanduliferum subsp. glanduliferum is a south European alpine species with isolated populations that occur in the northern Apennines on Monte Prado, Monte Cusna, and Monte Cimone ( Foggi and Ricceri 1989; Gottschlich 2018). This is the first count for this taxon for Italy, whereas other counts have been published for Hieracium glanduliferum Hoppe subsp. piliferum Hoppe ex Nägeli & Peter, for which two different chromosome numbers have been reported so far, 2 n = 3 x = 27 from Italy, Switzerland, and Austria ( Scholte 1977; Chrtek et al. 2009) and 2 n = 4 x = 36 from Austria and Slovakia ( Mráz 2003; Chrtek et al. 2009, in all sources under the name Hieracium piliferum Hoppe).

S. Orsenigo, A. Giacò, G. Astuti

Figures

Figure 4. Hieracium glanduliferum Hoppe subsp. glanduliferum from Monte Prado (Ventasso, Reggio Emilia), 2 n = 27. Scale bar: 10 μm.