The book Principles of Botany was written by author Joseph Y Joseph Young Bergen Here you can read free online of Principles of Botany book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Principles of Botany a good or bad book?
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Among them is the morel {Morchdla), much prized as one of the best of the edible fungi (Fig. 222), and some other curiously shaped types (Helvetia, Mitrula, Geoc/losstuti, etc.). Digitized by Google 252 THE FUNGI The fruiting surface of the ascocarps is sometimes very extensive, and is thrown up into irregular lobes and ridges. 268. The knot and wart fungi. This lai^e group contains forms with peculiar hard black or brown wart and scab-like fructifications, w^hich are found on the bark of trees.... Most of the species are sapro- phytic, but some, as the black knot (Fig. 223), on the plum and cherry, are very destructive parasites. The outer parts of the sac fruits contain immense ^"f^.^^ J\^ """7^ numbers of sraaU cavities {Morchella), an edi- ble sac fungus (perith^cia) that are lined The convoluted upper with asci. Very little is portion is an exposed known of the development fruiting surface « , , p .^ of such complex sac fruits, but it is probable that many of these fungi are sexually degenerate, as are some of the cup fungi.
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