. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. MO ULDS—HYPHOMYCETES 279. the Mucedines. In this family, as in all the primary divisions of the orders devised by Saccardo, the spores, or conidia, hold the first place, so that not only are the genera limited by the septation, or non-septation, of the spores, but this also forms the basis of the first subdivision into the Amerosporae (Fig. 126), in which the conidia are spheroid or shortly cylindrical; the Didymosporae, in which the conidia are oblong or fusoid, and un
. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. MO ULDS—HYPHOMYCETES 279. the Mucedines. In this family, as in all the primary divisions of the orders devised by Saccardo, the spores, or conidia, hold the first place, so that not only are the genera limited by the septation, or non-septation, of the spores, but this also forms the basis of the first subdivision into the Amerosporae (Fig. 126), in which the conidia are spheroid or shortly cylindrical; the Didymosporae, in which the conidia are oblong or fusoid, and uniseptate; the Phragmo- sporae, in which the more elongated conidia are two, three, or many septate; the Staurosporae, in which the conidia are stellate, radiate, or trifurcate; and the Helicosporae, in which the elongated conidia are spirally convolute. It is not clear that the last is a necessary or homo- geneous section, or that it is at best any other than a subsection of the Phragmosporae, with the elongated and septate conidia, instead of being simply curved or fiexuous, curved more strongly so as to be spirally convolute. Thus, then, having discovered that any given mould has a simple or compound stem, it is incumbent to ascertain, on the assumption that the stem is simple, whether the threads are carbonised, or only hyaline, or bright coloured, and thus dis- cover the one of the four families in which its place has to be founds It being determined, for example, that the mould in question is a Mucedine, the next step is to find the conidia, and ascertain if they are continuous, or in what manner they are septate. Up to this point it may be possible to place a sterile mould, but from this point forwards it is manifestly impossible to proceed, in the absence of all fructification. This leads us to observe how utterly futile it is to attempt the determination of even the genus, much less the species, of any mould, in the absence of conidia. Novices are apt to infer that it
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