File:Forest trees of the Pacific slope (1908) (14594018080).jpg

Identifier: foresttreesofpac00unit (find matches)
Title: Forest trees of the Pacific slope
Year: 1908 (1900s)
Authors: United States. Forest Service Sudworth, George Bishop, 1862-1927
Subjects: Trees Forests and forestry
Publisher: Washington Govt. Print. Off
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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ood by southwestern Indians and Mexicans.Two species and two well-marked varieties occur in southwestern United Statesand adjacent territory on the south. Screwpod Mesquite.Pro.sopiti (xlorata o Torrey and Fremont. DISTINGUISHING CHARACTERISTICS. Sometimes a short-trunked tree from 15 to 20 feet high, and from 3 to 8 (rarely10 to 12) inches in diameter, but usually shrubby, with numerous stems; barkof large trunks pale reddish brown, shaggy with loose strips. Year-old twigs The technical name maintained by other writers is Prosopis puhcscens Bentham(184G) ; Prosopis odorata T. and F. was published in 1845 and is clearly entitled torecognition on the ground of being the first name applied to this tree, except for the FOREST TREES OF THE PACIFIC SLOPE. 363 I are hoary with more or less dense, miuute hairs. A pair of sharp spines marksthe point from which one or two 2-forked leaf stems Issue; each spine l)earsfrom 5 to 8 pairs of small, whitish-hairy leaflets (fig. 170). The ;?reenlsh, I
Text Appearing After Image:
^07 Fig. 170.—Prusoijiff odorata. inodorous flowers bloom from spring to late summer, producing successivecrops of pods. Mature pods, pale yellow, cylindrical, spirally twisted (fig. unfortunate fact that the authors of it give in their description and plate characters ofboth Prosupis juJifloru DC. and of the screwpod mesquite. It is probable that a foliageand flowering branch of the former was used, with fruit of the latter species. There is 364 FOREST TREES OF THE PACIFIC SLOPE. 170)—a most distinctive character—and containing from about 10 to 20 small,smooth, hard seeds (fig. 170). Wood, pale yellowish brown and otherwisesimilar in its qualities, including weight, to that of the succeeding species. LoNGE^^TY.—Age limits not determined. Trees from 6 to 8 inches in diameterare approximately from 50 to 75 years old, while the larger trees found occa-sionally are estimated to be from 100 to 150 years old. Westfc»rn Texas (valloy of Rio Grande, from Devils River to El Paso) ; w

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