. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. MUSHROOM (AGARICUS) 249 at their ends to form the superficial paUsade-like hymenium (li.) and a round-celled subhymenium (s.). The former comprises two kinds of club-shaped hyphal terminations: some, the basidia {ha.), bear at their apex two, or four, short processes, from the end of each of which a hasidiospore is formed, whilst the others are purely sterile, and probably play a part in the. Fig. 132.—The common Mushroom (Agaricus campestris). h, c, and a, successive stages in the development of the fructifi
. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. MUSHROOM (AGARICUS) 249 at their ends to form the superficial paUsade-like hymenium (li.) and a round-celled subhymenium (s.). The former comprises two kinds of club-shaped hyphal terminations: some, the basidia {ha.), bear at their apex two, or four, short processes, from the end of each of which a hasidiospore is formed, whilst the others are purely sterile, and probably play a part in the. Fig. 132.—The common Mushroom (Agaricus campestris). h, c, and a, successive stages in the development of the fructification (in a the annulus is distinct, but yet unruptured) ; e, transverse section through small part of cap, showing gills ; d, one of the latter enlarged ; /, sur- face of a gill, in section, highly magnified, ha., basidium ; /i., hyme- nium ; s., subhymenium ; t., large cells of middle of gill. (After Sachs.) detachment of the spores. This method of spore-formation is that characteristic of Basidiomycetes generally, four being the usual number produced. The colour of the spores varies con- siderably in different forms. The enormous production of spores in this and other similar Fungi can be gauged by placing the mature caps, with the gills downwards, on a sheet of white paper, when, after a short time, the outline of each gill will be marked by the spores which have. 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 Fritsch, Felix Eugene, 1879-; Salisbury, E. J. (Edward James), Sir, b. 1886. London, G. Bell and sons ltd.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpl, booksubjectplants
