. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. MUSHROOMS AND TOADSTOOLS 233 the gills. As the pileus expands the membrane becomes detached first at the margin of the cap, and it falls down around the stipe, as a frill, plaited in delicate folds, corresponding to the former lines of contact with the lamellas and is now known as the annulus superus, frill, or armilla. Special milk tubes are found in such forms as species of Lac- tarius for when these toadstools are wounded a milky fluid oozes out in drops. Each basidium usually bears
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. MUSHROOMS AND TOADSTOOLS 233 the gills. As the pileus expands the membrane becomes detached first at the margin of the cap, and it falls down around the stipe, as a frill, plaited in delicate folds, corresponding to the former lines of contact with the lamellas and is now known as the annulus superus, frill, or armilla. Special milk tubes are found in such forms as species of Lac- tarius for when these toadstools are wounded a milky fluid oozes out in drops. Each basidium usually bears four basidiospores, sometimes there^are two. The color of these spores is distinctive, and is used in. Pig. 93.—Deadly amanita {Amanita muscaria) showing volva at base of stem and frill, like stem ring. (After Chestnut, V. K., Bull. 175, U. S. Dept. Agric, pi. i, Apr. 29, 191S) J the classification of the genera of the family. We distinguish the white-spored, rosy-spored, ochre-spored (yellow or~brown), brown- spored, black-spored agarics. BuUer in his "Researches on Fungi" (1909) has carried on detailed studies with numerous species of gill fungi and has studied the physi- ology and mechanics of spore discharge and fall. The disposal of the hymenium beneath a pileus on gills, the rigidity of the fruit body, the growth movements of the fruit body, all facihtate the distribution of the discharged basidiospores. The spores liberated from a pileus in per-. 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 Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
