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Total: 13

genus valid

Genus Pontederites Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 154. 30 Mar 1923

genus unavailable

Genus Populoxylon Knowlt. Monogr. U.S. Geol. Surv., 32(2): 770. Oct 1899

genus valid

Genus Preissites Knowlt. Bull. Torrey Bot. Club, 21(10): 458. 24 Oct 1894

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