 | 1875 - 162 páginas
...intermediate between them and clearly unite them all as forms of one single extremely polymorphous species. If one oak behaves thus, why not others? Thrown into...doubt, what can guide us to a correct knowledge?" The author then takes up in detail the various features that are of use in determining the groups and... | |
 | 1890 - 454 páginas
...intermediate between them, and clearly unite them all as forms of one single extremely polymorphous species. If one oak behaves thus, why not others? Thrown into...doubt, what can guide us to a correct knowledge?" Now Mr. Greene raises these forms again to specific rank, and among them creates a new one. If this... | |
 | Andrew Samuel Fuller - 1900 - 312 páginas
...to mention them all, however briefly, besides they are mostly fruit or small ornamental trees of 110 especial interest to the practical forester. The common...responsibility of separating them upon some one else. Qnercns agrifolia, Nee. — Encino Holly-leaved Oak. — Leaves oval to oblong, two to three inches... | |
 | Andrew S. Fuller Fuller - 1908 - 312 páginas
...made it necessary to revise some of the earlier classifications of the members of this genus. The lute Dr. George Engelmann, of St. Louis, Mo., a most capable...responsibility of separating them upon some one else. (jnemi- agrifolia, Nee. — Encino Holly-leaved Oak. — Leaves oval to oblong, two to three inches... | |
 | 1875 - 420 páginas
...intermediate between them and clearly unite them all -is forms of one single extremely polymorphous species. If one oak behaves thus, why not others? Thrown into...doubt, what can guide us to a correct knowledge?" The author then takes up in detail the various features that are of use in determining the groups and... | |
 | Academy of Science of St. Louis - 1878 - 968 páginas
...intermediate between them and clearly unite them all as forms of one single extremely polymorphous species. If one oak behaves thus, why not others? Thrown into...of doubt, what can guide us to a correct knowledge ? Though oaks are so common and such well-studied plants. I venture in the following pages to repeat... | |
 | 1876 - 1108 páginas
...as forms of one single, polymorphous species. If one ouk behaves thus, why not others ? Thrown upon a sea of doubt, what can guide us to a correct knowledge?" Dr. Engelmann reviews the principal characters, one by one, to settle their relative value ; and, in... | |
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Sylva," and later published in this country, will long remain a monument to the industry and scientific attainments of the authors, but recent discoveries, especially in the Rocky Mountain regions and westward, has not only added many new species of the... 