. Nature study and life. Nature study. FLOWERLESS PLANTS 453. A Boletus trees, both dead and alive, and many are directly respon- sible for the death of trees upon which they are found. Boleti. If the mushroom is soft, not woody, and has tubes easily separable from the rest of the cap, it belongs to the genus Boletus. Several Boleti are pronounced edible, but, as with the amanitas, taste is not a safeguard against the poisonous kinds. Satan's Boletus, B. satanus, B. luridus, B. alveolatus, and other allied species are set down in most of the books as poisonous. Mcllvaine pronounces them "
. Nature study and life. Nature study. FLOWERLESS PLANTS 453. A Boletus trees, both dead and alive, and many are directly respon- sible for the death of trees upon which they are found. Boleti. If the mushroom is soft, not woody, and has tubes easily separable from the rest of the cap, it belongs to the genus Boletus. Several Boleti are pronounced edible, but, as with the amanitas, taste is not a safeguard against the poisonous kinds. Satan's Boletus, B. satanus, B. luridus, B. alveolatus, and other allied species are set down in most of the books as poisonous. Mcllvaine pronounces them "remarkably fine ; ^. jfl/fl:««j is a large mushroom, three Fig. i to eight inches in diameter, brownish yellow to dull white in color. The tubes are yellow, except at their mouths, which are bright red. The stem is thick and swollen and is marked with red reticulations near the cap. The flesh is whitish but changes to reddish or violet when wounded. B. luridus is similar, but smaller, two to four inches broad, brownish olive above, and the flesh turns blue when broken. Fistulina. If the tubes hang separate, , are not cemented together in a mass, the mushroom is a Fistulina. The common spe- cies is F. hepatica, the beef tongue, or beefsteak fungus, which grows sometimes in huge masses on oak and chestnut stumps. Its color is red, variegated above and streaked in lines of growth. Below, the spore surface is pale, tinged with yellow or pink. The beefsteak mushroom is certainly not poisonous, and some consider it edible in spite of its marked acidity. Polypori. If the tubes cling together, are inseparable from the cap, and the plant becomes woody or corky with age, it is probably a Fig. 187. , Polyporus. These are the "bracket fungi," " punks," and " conchs " often found growing -upon trees. A few Polypori are " edible," after a fashion, when young and tender, but the chief reason for studying them relates to
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