Species

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Total: 709

species valid

Ziziphus townsendii Knowlt. Proc. U.S. Natl. Mus., 17(998): 229. 2 Aug 1894

species valid

Ziziphus lesquereuxii Knowlt. Bull. U.S. Geol. Surv., (152): 246. Oct 1898

species valid

Ziziphus hesperia Knowlt. Profess. Pap. U.S. Geol. Surv., (155): 111. 19 Jun 1930

species valid

Woodwardia preareolata Knowlt. Monogr. U.S. Geol. Surv., 32(2): 665. Oct 1899

species valid

Woodwardia maxonii Knowlt. Smithsonian Misc. Collect., 52(4): 489. 11 Jan 1910

species valid

Woodwardia crenata Knowlt. Bull. U.S. Geol. Surv., (163): 22. Apr 1900

species valid

Woodwardia columbiana Knowlt. Smithsonian Misc. Collect., 52(4): 491. 11 Jan 1910

species valid

Vitis hesperia Knowlt. Proc. U.S. Natl. Mus., 51(2151): 284. 24 Nov 1916

species valid

Vitis heeriana Knowlt., Cockerell in Knowlt. Bull. U.S. Geol. Surv., 1919, (696): 648. 13 Feb 1920

species valid

Viburnum vulpinum Knowlt. Profess. Pap. U.S. Geol. Surv., 98(H): 92. 3 Jun 1916

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