. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 292 DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. of being moved up and down on the stipe in consequence of the first separation, the annulus mohilis. 2. In the species of the groups of Amanita and Volvaria which are furnished with a volva, the development of the pilaus is essentially different from that of the rest of the Hymenomycetes, as far at least as has been ascertained by my older and Brefeld's recent examination of the Amaniteae. In this group the compound spo
. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 292 DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. of being moved up and down on the stipe in consequence of the first separation, the annulus mohilis. 2. In the species of the groups of Amanita and Volvaria which are furnished with a volva, the development of the pilaus is essentially different from that of the rest of the Hymenomycetes, as far at least as has been ascertained by my older and Brefeld's recent examination of the Amaniteae. In this group the compound sporophore in its earliest state is a small tuber-like body produced on a mycelium consisting of a weft of hyphae uniformly capable of development. This body grows in every direction, and not by advance on one side only, to the size of a hazel-nut or even larger, and stipe, pileus, and lamellae are formed inside it by differentiation of the tissue, by being moulded as it were out of the originally homogeneous fundamental mass. The youngest roundish tubers, somewhat more than i mm. in diameter, which Brefeld saw in Amanita muscaria, are close wefls of hyphae, composed in the larger portion of the tuber of slender cylindrical cells which are. Fig. 134. Copriuus micncens. Fr. a a young specimen z mm. in length in radial longitudinal section; the annular furrow beneath the future hymenial surface is bridged over on the outside by the veil, b a specimen 3*5 mm. in length in radial longitudinal section, c a thin radial longitudinal section through a somewhat younger specimen than b. ^transverse section through the middle of the pileus off. n and b slightly magnified, d magn. 90 times, c somewhat less highly magnified. here and there dilated into vesicles. In a small peripheral section, which, from its position with respect to the substratum, may be called the apex, the hyphal tissue is exclusively formed of slender delicate filaments, and its elements are evidently in the act of branc
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