Petrorhagia

Meikle, R.D. 1977: Flora of Cyprus 1
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