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Total: 2

genus valid

Genus Ptilophyllum Morris Trans. Geol. Soc. (London), Ser. 2, 5(2): Explan. Pl. XXI [1]. 1 Jan 1840

genus valid

Genus Spermopteris Cridland, Morris Amer. J. Bot., 47(10): 855. 23 Dec 1960

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