Petrorhagia

R. D. Meikle, Flora of Cyprus 1. 1977
but modified and accepted names differing
1Inflorescence enveloped by broad membranous or scarious, ecostate bracts
1'Inflorescence not enveloped by membranous or scarious bracts, or bracts costate
2Calyx 15-nerved; calyx-teeth cuspidate; petals entire
2'Calyx 5-nerved; calyx- teeth subacute; petals bifid