. Fundamentals of botany. Botany. ECONOMIC IMPORTANCE OF PUNGI 303 the Department of Agriculture, importation of every spe- cies of the genus Pinus has been forbidden from all European countries and lo- calities. In March, 1916, the Federal Horticultural Board requested all nursery- men in the eastern United States not to ship white pine, gooseberry or currant stock into the Rocky Moun- tain and Western white pine forest areas. 288. Timber-destroying Fungi.—Everyone recalls the "shelf-fungi," so often seen growing on the trunks of trees (Fig. 223). These forms are the fruiting bodies
. Fundamentals of botany. Botany. ECONOMIC IMPORTANCE OF PUNGI 303 the Department of Agriculture, importation of every spe- cies of the genus Pinus has been forbidden from all European countries and lo- calities. In March, 1916, the Federal Horticultural Board requested all nursery- men in the eastern United States not to ship white pine, gooseberry or currant stock into the Rocky Moun- tain and Western white pine forest areas. 288. Timber-destroying Fungi.—Everyone recalls the "shelf-fungi," so often seen growing on the trunks of trees (Fig. 223). These forms are the fruiting bodies of the fungus, while the my- ceUum ramifies through the wood, often in such quan- tities as to form the "punk," formerly much used in set- ting off fireworks. The soft fungal threads are enabled to make their way through the hard woody tissue by means of an enzyme which they secrete. The enzyme softens and dissolves the Since July i, 1915, the. Fig. 223.—A shelf-fungus {Fames applanaUis) on sugar maple. cell-walls of the wood, thus. 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 Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookauthorgag, bookcentury1900, bookdecade1910, booksubjectbotany
