Species

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Total: 712

species valid

Dryopteris weedii Knowlt. Monogr. U.S. Geol. Surv., 32(2): 669. Oct 1899

species valid

Dryopteris xantholithensis Knowlt. Monogr. U.S. Geol. Surv., 32(2): 671. Oct 1899

species valid

Equisetum canaliculatum Knowlt. Monogr. U.S. Geol. Surv., 32(2): 675. Oct 1899

species valid

Equisetum coloradense Knowlt. Profess. Pap. U.S. Geol. Surv., (155): 31. 19 Jun 1930

species valid

Equisetum deciduum Knowlt. Monogr. U.S. Geol. Surv., 32(2): 676. Oct 1899

species valid

Equisetum haguei Knowlt. Monogr. U.S. Geol. Surv., 32(2): 674. Oct 1899

species valid

Equisetum lesquereuxii Knowlt. Bull. U.S. Geol. Surv., (152): 94. Oct 1898

species valid

Equisetum newberryi Knowlt., Cockerell in Knowlt. Bull. U.S. Geol. Surv., 1919, (696): 257. 13 Feb 1920

species valid

Fagus undulata Knowlt. Monogr. U.S. Geol. Surv., 32(2): 700. Oct 1899

species valid

Ficus aguilar Knowlt. Profess. Pap. U.S. Geol. Surv., 1917, 101: 300. May 1918

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