. Essentials of botany. Botany; Botany. Fig. 185. Armillaria mellea (often known as Agaricus melleus). This is a basidia fungus which can live either as a parasite or a saprophyte. As a parasite it is very destructive to the roots ot coniferous trees. A, fructifications of various ages; c, c', very young *' buttons "; st, the stem or stipe; r, the ring (the remains of a membrane by which the margin of the cap was at first attached to the stalls); g, the gills. B, branching myce- lium spread out between the bark and the wood of the root of the host. stud/, though the directions which follo
. Essentials of botany. Botany; Botany. Fig. 185. Armillaria mellea (often known as Agaricus melleus). This is a basidia fungus which can live either as a parasite or a saprophyte. As a parasite it is very destructive to the roots ot coniferous trees. A, fructifications of various ages; c, c', very young *' buttons "; st, the stem or stipe; r, the ring (the remains of a membrane by which the margin of the cap was at first attached to the stalls); g, the gills. B, branching myce- lium spread out between the bark and the wood of the root of the host. stud/, though the directions which follow might require in some cases to be slightly modified for other genera than Psalliota. 337. Gross Structure Secure a group of perfect specimens which have been dug up with some of the mycelium attached. Note : (a) The division into an aerial fruiting portion,'^ commonly called the mushroom, and the underground mycelium, or " ; Draw the entire portion above ground. (J) The stages in the development of the cap and its stalk from the "buttons" (Fig. 185, A). (c) The cap, gills, ring, and slalk of a fully developed mushroom. Observe the mode of origin of the ring. 1 The word " fruiting " is often used with reference to spore-plants to apply to the spore-bearing portions or the spore-producing 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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