. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 220 WHITE ASH Fraxinus americana, Linnaeus FOEM—Usually reaches a \ic\kM of 70-SO ft. with a diameter of 2-3 ft. but may attain a height of 120 ft. with a diaim>ter of .5-0 ft. Trunk usually tall, massive, clear of branches for a considerable distance from the {jround when grown in thfe forest, bearing a nnirow, some- what pyramidal crown. When onen-grown the crown is decidedly round-topped and often extends almost to the ground. In forest-grown trees tnmk often continuous and dividing into a number of spreading
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 220 WHITE ASH Fraxinus americana, Linnaeus FOEM—Usually reaches a \ic\kM of 70-SO ft. with a diameter of 2-3 ft. but may attain a height of 120 ft. with a diaim>ter of .5-0 ft. Trunk usually tall, massive, clear of branches for a considerable distance from the {jround when grown in thfe forest, bearing a nnirow, some- what pyramidal crown. When onen-grown the crown is decidedly round-topped and often extends almost to the ground. In forest-grown trees tnmk often continuous and dividing into a number of spreading branches. BARK—Grayish-brown, rather thick upon older trunks, decidedly divided by diamond-shaped fissures into rather flattened ridges which are covered by thin, close fitting scales. Longitudinal ridges often transversely-fissured to that the primary fissures are connected. See Pig. 107. TWIGS—-Opposite, stout, usually smooth, sonnetimes covered with a slight bloom, decidedly flattened at the nodes. During the first winter grayish-brown in color, and decidedly lustrous; covered by scattered, large, pale lentlcols. BUDS—Opposite, ovate, blunt-pointed, usually dark Iwown, occasionally almost black. Term- inal bud larger than laterals, covered by 2-3 pairs of visible scales wlilch occur oi)po8ite each other. Scales on the terminal buds may be somewhat sharp-pointed, while those on the lateral buds are usually obtuse. Two lateral buds are usually found at base of terminal bud causing a terminal enlargement of twi,;. LEAVES—Opposite, compound, about 10 inches long with 5-0 leaflets. Leaflets 3-5 inches long, about IJ inches broad, evidently-stalked, slightly serrate on margin, acute at apex, wedge-shaped to rounded at base. When full grown usually smooth and dark grfc«n above and pale below. A few hairs are sometimes found along the veins on the lower surface. LEAF-SCARS—Opposite, semi-circular in outline, notched on the upper niargin, raised, con- spicuous; bundle-s
Size: 1312px × 1905px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectforests, bookyear1901
