Species

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Total: 678

species valid

Abies longirostris Knowlt. Profess. Pap. U.S. Geol. Surv., 131(G): 187. 31 Mar 1923

species valid

Abies rigida Knowlt. Profess. Pap. U.S. Geol. Surv., 131(G): 186. 31 Mar 1923

species valid

Acacia lamarensis Knowlt. Monogr. U.S. Geol. Surv., 32(2): 730. Oct 1899

species valid

Acacia macrosperma Knowlt. Monogr. U.S. Geol. Surv., 32(2): 729. Oct 1899

species valid

Acacia wardii Knowlt. Monogr. U.S. Geol. Surv., 32(2): 730. Oct 1899

species valid

Acer chaneyi Knowlt. Profess. Pap. U.S. Geol. Surv., 140(A): 45. 19 Feb 1926

species valid

Acer gigas Knowlt. Bull. U.S. Geol. Surv., (204): 76. Dec 1902

species valid

Acer grahamense Knowlt., Cockerell in Knowlt. Bull. U.S. Geol. Surv., 1919, (696): 50. 13 Feb 1920

species valid

Acer Iesquereuxii Knowlt. Bull. U.S. Geol. Surv., (152): 26. Oct 1898

species unavailable

Acer kirchnerianum Knowlt. Proc. U.S. Natl. Mus., 51(2151): 282. 24 Nov 1916

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