Petrorhagia (Seringe ex Candolle, 1824) Link, 1831

Oskay, Dilek, 2024, Petrorhagia dubia subsp. mustafanus (Caryophyllaceae), a new subspecies from Turkey, Phytotaxa 646 (1), pp. 75-81 : 80

Key to closely related Petrorhagia species:— It follows:

1. Leaf sheaths less than 2 times longer than broad; stems glabrous; upper leaves with serrate-setose margins ..................... prolifera

1. Leaf sheaths 2 times longer than broad; stems pubescent near the middle; upper leaves with smooth margins ....................... dubia

1a. Petals pink or purplish, with darker veins; basal leaves length 20–60 mm; the largest bracts length 6–14 mm; capsule length 5–7 mm; seed diameter 0.7–0.8 mm ...................................................................................................................................... subsp. dubia

1b. Petals completely white, concolour veins; basal leaves length 10–20 mm; the largest bracts length 14–17 mm; capsule length 8–9 mm; seed diameter 0.8–1.0 mm ............................................................................................................................ subsp. mustafanus

Paratypes:— TURKEY. B1 Soma district, Manisa province, Dede mountain peak, 900 m, 08 June 2023, Oskay 2973 ( EGE) ; ibidem, Oskay 2977 ( EGE) ; ibidem, 23 June 2023, Oskay 3129 ( EGE) ; ibidem, Oskay 3133 ( EGE) .