Mushrooms and other common fungi . ichthe two layers of the exoperidium separate, the outer remaining as asegmented basal cup, while the inner layer becomes arched and causesthe elevation of the endoperidium. Geaster hygrometricus. Peridium depressed globose; exoperidium splitting at the apex divides into a varia-ble number of strongly hygrometric segments, which are rigidly inrolled when dry andexpanded when moist; endoperidium whitish gray or brown, thin, membranaceous,with a small, irregular mouth. Inner peridium three-fourths to 1 inch in diameter. Segments 6 to 20 in number,2 to 3 inches
Mushrooms and other common fungi . ichthe two layers of the exoperidium separate, the outer remaining as asegmented basal cup, while the inner layer becomes arched and causesthe elevation of the endoperidium. Geaster hygrometricus. Peridium depressed globose; exoperidium splitting at the apex divides into a varia-ble number of strongly hygrometric segments, which are rigidly inrolled when dry andexpanded when moist; endoperidium whitish gray or brown, thin, membranaceous,with a small, irregular mouth. Inner peridium three-fourths to 1 inch in diameter. Segments 6 to 20 in number,2 to 3 inches in diameter when expanded. Geaster hygrometricus is the species most frequently collected. It is common inwoods, sandy locations, or partially cleared land. The peculiarity of this species isthe hygroscopic nature of the exoperidium. In dry weather the segments are stronglyrecurved, but in wet weather they expand. This process may occur repeatedly,depending on weather conditions, and it is often called the poor mans weather 52 BULLETIN 1*75, U. S. DEPARTMENT OF AGRICULTURE. SCLERODERMACEJE. Fungi belonging to the family Sclerodermacese are developed at thesurface of the ground. The peridium is generally thick, rough, warty,or scaly, but not composed of distinct layers. The representativegenus of the family and the one most commonly observed by theamateur collector is Scleroderma. SCLERODERMA. In the genus Scleroderma the plants are sessile or nearly so. Theperi dial wall is generally thick, hard, and leathery, but it may bescaly or warty, indehiscent, or it may burst at the apex into stellatelobes. None of the species here described are highly recommendedfor edibility. Scleroderma geaster. Peridium mostly sessile, subglobose, coarse in texture, finally scaly, at length de-hiscing in an irregularly stellate manner. These plants are at first dingy ocher incolor, later becoming brown, the spore mass finally purplish brown. Specimens maybe found from 2 to 3 inches in diamet
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmushroo, bookyear1915
