... In addition, it is predominantly an autumn-to early winterflowering species, whereas G. nivalis is characterized by its late winter-to early springflowering time (Davis 1999(Davis , 2001. To date, G. reginae-olgae has been found in mainland Greece (Delipawlow and Angeliew 1970, Davis 1999, 2001, Vladimirov et al. 2011, Corfu (Stern 1956, Delipawlow and Angeliew 1970, Davis 1999, 2001, the Ionian Islands (Trigas et al. 2021), Albania (Delipawlow and Angeliew 1970, Malo and Shuka 2008, Shuka et al. 2011, Mahmutaj et al. 2015, Barina, 2017, Montenegro (Davis 1999, 2001, Jovanović 2019, Bosnia and Herzegovina (Šilić 1996, Davis 2001, Tomović et al. 2023, Croatia (Davis 1999, 2001, Čičovački and Alegro 2013, Jovanović et al. 2013, mainland Italy (Davis 1999, 2001, Conti et al. 2005, Bartolucci et al. 2018, Rosati et al. 2020 and Sicily (Stern 1956, Gramuglio et al. 1978, Davis 1999, 2001, Conti et al. 2005, Di Marco et al. 2012, Bartolucci et al. 2018 (Fig. 1). It is most common in or near woodlands, in damp, north-facing shady locations, among rocks or in narrow gorges, on moist, humus-rich and deep soils overlaying limestone, at a wide range of altitudes, but usually above 500 m (Davis 1999(Davis , 2001. ...