. Lessons in nature study. Nature study. 40 NATURE STUDY. begin by gathering the different forms that may be found and determining where the spore bearing surface is in each. As has already been seen in Fig. 14, the spore bearing surface of the com- mon edible mushroom is on the gills on the under side of the cap. There are many forms like this from which spore prints can be obtained. Another large group of mushrooms bears the spores on the surface of small tubes which are in the part under the cap, or under the shelving masses growing on the sides of stumps or logs. Fig. 16 is a very common f
. Lessons in nature study. Nature study. 40 NATURE STUDY. begin by gathering the different forms that may be found and determining where the spore bearing surface is in each. As has already been seen in Fig. 14, the spore bearing surface of the com- mon edible mushroom is on the gills on the under side of the cap. There are many forms like this from which spore prints can be obtained. Another large group of mushrooms bears the spores on the surface of small tubes which are in the part under the cap, or under the shelving masses growing on the sides of stumps or logs. Fig. 16 is a very common form found in lawns, in the woods under pine trees and in other situations. It is known as Boletus and there are many species of this genus: The illustration shows the tubes on the under surface of the cap. Fig. 17 repiesents a spore print of this Boletus, taken by cutting off the cap and placing it bottom side down on a sheet of paper and allowing it to remain for some hours when it dis- charges its spores down the tubes thus outlining the un- derside of the fungus. The puff-balls keep their spore surfaces inclosed in a sac, while the spores are forming. When they are ripened the sac be- comes dry and breaks open at the top. Any slight shake on it sends out a puff of smoke. The smoke is a cloud of spores. Fig. 17—Spore print of tht Boletus of Figr. 16. Some of the puff-balls in California grow to the enormus size ot a foot in diameter. These when growing, while still white are excellent food, many thousands of pounds of which go to waste every 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 Jenkins, Oliver Peebles; Kellogg, Vernon L. (Vernon Lyman), 1867-1937. joint author. San Francisco, The Whitaker & Ray Company
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