Botanical Survey of India | Flora of India

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Petrorhagia (Ser.) Link

Herbs, annual or perennial; stems slender, branched. Leaves narrow. Flowers in paniculate cymes or capitate, bracteate or ebracteate. Calyx obconical to cylindrical, 5-toothed, 5 - 15-nerved with scarious commissures. Petals 5, with or without a claw; coronal scales absent. Stamens 10. Styles 2. Capsules dehiscing by 4 teeth; seeds dorsiventrally compressed with a facial hilum, scutate; embryo straight.

Western Asia, Russia, Europe, Africa, Australia and the Pacific Islands; ca 25 species, one species in India.

Literature. BALL, P. W. &, V.H. HEYWOOD (1964) A revision of the genus Petrorhagia. Bull. Brit. Mus. (Nat.Hist.) Bot. 3(4): 121 - 172.

Notes. The genus Petrorhagia with a wide circumscription including Tunica auct. and Kohlrauschia Kunth, as treated by Ball & Heywood (1964) is followed here. Petrorhagia is more or less intermediate between Dianthus L. and Gypsophila L.

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