File:The tree book - A popular guide to a knowledge of the trees of North America and to their uses and cultivation (1920) (14802865693).jpg

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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dparents? It takes years of careful study to find out these things. Accu-rate records must be kept; each tree has its pedigree and biographywritten in full in the card catalogue, and a prophecy of its valuein cultivation. Perhaps there are not so many species as are now described.One student of the genus thinks that the virgin forests kepthawthorns suppressed. The clearing of the land gave them achance. The multitude of forms now seen, he thinks may beseminal variations, due to the more favourable auspices underwhich the seedling trees now grow. Until recent years, nobodyWas making observations on the subject. Now, in many regions^this scientific study is being carried on—independently or in con-junction with Professor Sargent. The outcome will be a largebody of knowledge regarding the genus. The horticulturist is beginning to realise the value of thehawthorns. The showy flowers and fruits, the vivid colouringof autumn foliage, and the striking character expressed in winter 304 L—
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Copyright, 1905; by Doubleday, Page & Company SCARLET HAW (Cratcegus coccinea) The Hawthorns by the rigid branches and their menacing thorns, give most ofthese little trees attractiveness at all seasons. Many speciesare handsome and effective as hedge plants. Fine individualtrees for lawn planting are furnished by others. Hawthornsare quick to grow in any soil and situation, and they show themost remarkable improvement when encouraged by tillage anda little fertilising. They do well in heavy clay. They are trans-planted easily when young, from the wild; but having tap rootsare hard to dig, and less sure to survive transplanting when older.They come readily from seed, though as a rule requiring two yearsto germinate. I. Crus-galli Cockspur Thorn (Crataegus Crus-galli, Linn.)—A small,handsome tree, 15 to 25 feet high, with stiff branches in a broad,round head. Thorns axillary, stout, often curved, brown orgrey, 3 to 4 inches long, often becoming 6 to 8 inches long andbranched when

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