. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. HYMENOMYCETES 131 common mushroom may be taken as an illustration of the former, and some species of Marasmius or Lentinus of the latter. This brings us in face of the fleshy, or Molles, section of white-spored Agarics, containing in 1893 about 1750 species, of which not more than 430 are British, having the edge of the gills acute and the folds of the hymenium separable. This corresponds therefore with the Leucosporae section of the old genus Agaricus. Nevertheless the
. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. HYMENOMYCETES 131 common mushroom may be taken as an illustration of the former, and some species of Marasmius or Lentinus of the latter. This brings us in face of the fleshy, or Molles, section of white-spored Agarics, containing in 1893 about 1750 species, of which not more than 430 are British, having the edge of the gills acute and the folds of the hymenium separable. This corresponds therefore with the Leucosporae section of the old genus Agaricus. Nevertheless there are additional genera which agree in their fleshy substance but differ in other particulars. In this category Hygrophorus is a genus by itself, with the gills continuous with the pileus, and not separable from the trama. Thus the gills and the pileus are practically of one piece. Many, and indeed most of them, are more or less glutinous when fresh, and perhaps for this reason are capable of enduring more frost than others of the fleshy Agarics. In addition to these are two genera which have the substance of the pileus of a peculiar vesicular character, soft and fragile, but which have also another remarkable feature of affinity with each other in the spores being normally globose. These two genera are Russula and Lactarius, the latter with and the former without a milky juice (Fig. 50). In habit and appearance they most resemble Tricho- loma, but a little experience will soon distinguish the difference. They are almost absolutely terrestrial and soli- tary, with a short robust stem, and many of the Russulae have a brightly coloured pileus. Commonly, but not universally, the gills in Russula reach from the margin to the stem without Fia- ^-LactaHus ddieioms, s with section and spores. intervening short gills; or, when shorter gills are present, these usually anastomose with the long gills, so as to appear as if the latter were forked. Finally there is a small group—consisti
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