. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. HYMENOMYCETES 143 pileus, and peculiarities of structure which prohibit its unison with Corticium; Michenera, with a placentiform habit, a waxy hymenium, and pedicellate spores; and Exdbasidium and Helico- hasidium, which are encrusting and waxy, growing upon living plants, and distorting them. Finally, Cyphella, having the form of Peziza but the fruit of Corticium, being in fact a cup-shaped Corticium; and Solenia, the cups of which are elongated into tubes, so that it
. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. HYMENOMYCETES 143 pileus, and peculiarities of structure which prohibit its unison with Corticium; Michenera, with a placentiform habit, a waxy hymenium, and pedicellate spores; and Exdbasidium and Helico- hasidium, which are encrusting and waxy, growing upon living plants, and distorting them. Finally, Cyphella, having the form of Peziza but the fruit of Corticium, being in fact a cup-shaped Corticium; and Solenia, the cups of which are elongated into tubes, so that it seems doubtful whether they should be placed in relationship with Poria, in Polyporeae, or with Cyphella in Thelephoreae. Briefly and succinctly, these are the principal genera of Thelephoreae, but before dismissing them we must advert to certain appendages of the hymenium which distinguish some of the genera above enumerated. In addition to the basidia there are to be found in the genus Penio- phora stout projecting cells, which are either the modified cystidia, or analogues of cystidia, but which have been called metuloids. They are fusiform, colourless, and at first smooth, but afterwards rough and brittle fig. of from the deposit of oxalate of lime on their surface. These are conspicuous objects upon the otherwise smooth hymenium, giving it a velvety appearance, and by this character separating the species from Corticium. In another genus, that of Hymenochaete, the same place and posi- tion on the hymenium is occupied by projecting, acute, non- septate brown bristles, which spring from the hyphae of the subiculum, and impart also a velvety appearance. Exter- nally in habit the species resemble Stereum, but they are readily distinguished by the presence of these brown project- ing bristles. A similar kind of appendage to the hymenium has been detected in some species of the Polyporei, for which the generic distinction of Mucronoporus has been proposed. In a sma
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