Identifier: treebookpopularg1920roge (find matches)
Title: The tree book : A popular guide to a knowledge of the trees of North America and to their uses and cultivation
Year: 1920 (1920s)
Authors: Rogers, Julia Ellen, b. 1866
Subjects: Trees
Publisher: New York : Doubleday, Page
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

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te. (P. integrijolia) entire-leaf cherry The genus Prunus includes trees with stone fruits, and hasits representatives well distributed over the Northern Hemisphere.In its wild forms it is not as well known, perhaps, as in thosevarieties that horticulture has brought to high perfection andimportance as fruit trees. There are over one hundred species,including many shrubby ones. Of this number about thirtyoccur in North America, only half of which assume tree form.All of these but the wild black cherry are small trees. Neverthe-less the wood of most of them is valuable, being close grained anddurable. Their fruits furnish food and medicinal substances.Beside the cherries and plums of others countries, the peach,apricot and almond belong to this genus. Important floweringvarieties of each are to be added to this list of valuable introducedStone fruits. THE PLUMS Wild Red, or Yellow Plum (Prunus Americana, Marsh.)—.A graceful little tree, 15 to 20 feet high, with thorny limbs. Bark 322
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THE CANADA PLUM (Prunus nigra) Note the spurs and the broad, abruptly pointed leaves. The sour, hard-fleshed orange fruits have flattened pits. They are ripe in August

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