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Petroana is a genus of flowering plants belonging to the family Caryophyllaceae, established by Madhani & Zarre in 2018 based on molecular and morphological evidence that distinguished its species from those in the closely related genera Gypsophila and Dianthus. This genus includes perennial herbs characterized by their adaptation to rocky habitats, with two species currently recognized: the type species Petroana montserratii (Fern.Casas) Madhani & Zarre and Petroana montana (Balf.f.) Madhani & Zarre.
Petroana species exhibit a disjunct distribution, with P. montserratii found in the Iberian Peninsula and P. montana in Yemen, Socotra, Oman, and Somalia. These plants typically grow in rocky slopes, gravelly wadi beds, limestone cracks, and vertical walls, demonstrating a preference for calcareous substrates.
Text excerpted from the Wikipedia article Petroana by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
