Species

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Total: 462

species valid

Pseudoaspidiophyllum latifolium Hollick Profess. Pap. U.S. Geol. Surv., (159): 96. 30 Jul 1930

species valid

Protophyllum querciforme Hollick Bull. Torrey Bot. Club, 22(5): 227. 15 May 1895

species valid

Protophyllum lesquereuxii Hollick Profess. Pap. U.S. Geol. Surv., (159): 93. 30 Jul 1930

species valid

Protophyllocladus simplex Hollick Profess. Pap. U.S. Geol. Surv., (159): 52. 30 Jul 1930

species valid

Protophyllocladus obesus Hollick Profess. Pap. U.S. Geol. Surv., (159): 51. 30 Jul 1930

species valid

Protodammara speciosa Hollick, E. Jeffrey

species valid

Populus pseudostygia Hollick Profess. Pap. U.S. Geol. Surv., (159): 63. 30 Jul 1930

species valid

Populus pseudoelliptica Hollick Profess. Pap. U.S. Geol. Surv., (159): 63. 30 Jul 1930

species valid

Populus praelatior Hollick Profess. Pap. U.S. Geol. Surv., (159): 64. 30 Jul 1930

species valid

Populus obscura Hollick Profess. Pap. U.S. Geol. Surv., 182: 68. 6 Oct 1936

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