. Foundations of Botany. Botany. 54 FOUNDATIONS OF BOTANY and truncate base, unevenly twice serrate, with rather long, slender petioles, which allow the leaves to quiver like those of the aspen. Bark scaling off in white strips and layers, but not in nearly as large sheets as that of the rarer canoe birch (B. papyri/era^). The commonest birch of New England. 4. B. alba, L. European White Birch, Cut-leaved Birch. A tree 50 to 60 ft. high, often with drooping branches. Leaves triangular-ovate, truncate, rounded or somewhat heart-shaped at the base, not strongly taper-pointed except in the cut-le
. Foundations of Botany. Botany. 54 FOUNDATIONS OF BOTANY and truncate base, unevenly twice serrate, with rather long, slender petioles, which allow the leaves to quiver like those of the aspen. Bark scaling off in white strips and layers, but not in nearly as large sheets as that of the rarer canoe birch (B. papyri/era^). The commonest birch of New England. 4. B. alba, L. European White Birch, Cut-leaved Birch. A tree 50 to 60 ft. high, often with drooping branches. Leaves triangular-ovate, truncate, rounded or somewhat heart-shaped at the base, not strongly taper-pointed except in the cut-leaved form. Commonly cultivated from Europe. Resembles No. 3, but has whiter bark and (the weeping form) much more slender branches. V. ALNUS, Tourn. Shrubs or small trees. Leaves petioled, serrate. Flower- buds stalked, appearing the previous season; staminate cat- kins racemed, drooping, flowers 3-6 in the axil of each bract, subtended by 1-2 bractlets, perianth 4-parted, stamens 4, fila-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn & company
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Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
