Clyde M. Christensen – författare

Edible Mushrooms was first published in 1981. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions.The choicest varieties of mushrooms cannot be cultivated or commercially grown but are available in abundance to those who take the trouble to find them. With this book in hand, anyone can, with confidence, gather and enjoy delicious wild mushrooms without fear of the poisonous varieties.Edible Mushrooms,a new edition of the 1943 classic guide, Common Edible Mushrooms,describes in detail more than 60 of the most abundant and most easily recognized species. Photographs, many in color, show each species in its natural habitat for easy identification. Clyde M. Christensen warns against the poisonous varieties and advises amateur mushroom hunters to become thoroughly familiar with the most common edible mushrooms and to avoid all others.This edition contains new full-color photographs, and new material on how mushrooms grow and how to identify and collect them. Christensen has updated the classification to bring scientific names into agreement with internationally approved nomenclature but retains the older technical names in parentheses for easy comparison with other guides. An enlarged section of recipes provides good ideas for making the most of a mushroom harvest.

Quality Maintenance in Stored Grains and Seeds was first published in 1986. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions.Storage molds are a major cause of quality loss in grains and seeds held in farm bins and tanks, in commercial elevators and warehouses, and in barge and ship transport. The damage done by these storage molds is at first invisible, but later shows up as caking, mustiness, total spoilage of part or all of the grain, and heating - sometimes to the temperature of ignition. The authors, both of whom have had extensive first-hand field and laboratory experience with these grain storage fungi and the problems they cause, summarize in readable and readily understandable form the basic principles and specific practices to be followed in order to minimize such losses.Chapters are devoted to grain grades and quality; storage fungi; conditions that promote or prevent loss in quality; spoilage in barge and ship transport; mycotoxins (toxic compounds produced by fungi growing in grains and feeds) and mycotoxicoses (the diseases caused in animals that consume such toxic products); insects, mites, and storage fungi, quality control; and identification of storage fungi as an aid in evaluation of grain condition and storability.

The Molds and Man was first published in 1965. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions.This highly readable volume on a little-known but important subject has been widely used as a text and reference book by the student as well as the interested layman.

Molds, Mushrooms, and Mycotoxins was first published in 1975. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions.As Professor Christensen has made evident in his earlier books, including The Molds and Man,fungi are significantly interesting in their life-styles and in the many ways in which they affect man. Here he continues his exploration of the lives of the fungi and their relation to man, focusing on the harmful or dangerous effects which certain molds, mushrooms, and other fungi can have on human beings.The first several chapters deal with fungi that are toxic in one way or another: either the fungi themselves are toxic when consumed, as with poisonous mushrooms and ergot, or the fungi secrete toxic compounds that diffuse into the substance on which they grow, making that substance toxic when eaten. He discusses hallucinogenic as well as poisonous mushrooms and provides extensive information about mycotoxins in human and animal foods, which are recently discovered health hazards.Other chapters deal with fungus spores, which are a major cause of respiratory allergies, and with fungi which are predators or parasites of insects and nematodes. A chapter is devoted to fungus infections of man and animals, which at times constitute a serious public health problem. Another chapter discusses the nature, cause, and prevention of wood decay in trees and buildings. In a final chapter the author discusses some aspects of organic evolution in general as a background for presenting theories and facts on the evolution of fungi. He summarizes some of the ways in which fungi enter into our lives and economy, and looks to the role of fungi in the future.The illustrations, in both black and white and color, show some of the fungi and processes that are discussed.