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Introduction to the study of fungi : their organography, classification, and distribution for the use of collectors . riaceous by Polystictus, and theothers above named. The next form of receptacle to be adduced is the peridium,which completely encloses the reproductive organs, and mayalso be supported on a distinct carpophore, or it may be sessileon the mycelium, or invested by it, as in some subterraneanspecies. The Gastromycetes furnish this kind of receptacle, which is very often double, typicallyglobose, the outer coat or exoperidiumbeing a continuation of the cortexof the carpophore when

Introduction to the study of fungi : their organography, classification, and distribution for the use of collectors . riaceous by Polystictus, and theothers above named. The next form of receptacle to be adduced is the peridium,which completely encloses the reproductive organs, and mayalso be supported on a distinct carpophore, or it may be sessileon the mycelium, or invested by it, as in some subterraneanspecies. The Gastromycetes furnish this kind of receptacle, which is very often double, typicallyglobose, the outer coat or exoperidiumbeing a continuation of the cortexof the carpophore when Stock Photo
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Introduction to the study of fungi : their organography, classification, and distribution for the use of collectors . riaceous by Polystictus, and theothers above named. The next form of receptacle to be adduced is the peridium,which completely encloses the reproductive organs, and mayalso be supported on a distinct carpophore, or it may be sessileon the mycelium, or invested by it, as in some subterraneanspecies. The Gastromycetes furnish this kind of receptacle, which is very often double, typicallyglobose, the outer coat or exoperidiumbeing a continuation of the cortexof the carpophore when the latterexists. The internal cavity is filledwith the reproductive bodies, whichare only liberated by the rupture ofthe coat of the peridium. The innerFig. 18.—Li/co2>ercion, peridium coat or endoperidium is often thin andan. section. membranaceous, and may either be wholly separated from the outer or adnate therewith (Fig. 18).A prolongation from the carpophore sometimes protrudes into thecentral cavity in the form of a columella. The outer coat or1 Verhand. Zool. Bot. GcsclL, Wien, xxxv. (1886), p. 29.. THE RECEPTACLE 37 exoperidium may be tough and leathery, and in Gcastcr it sphtsdownwards from the apex into several triangular lobes. InBovista it is fragile and evanescent. In Lycopcrdon it breaksup into granules, warts, or spines, which adhere for some timeto the inner and persistent peridium. In Polysaccum andScleroderma the periderm is not differentiated into two coats,but in the latter the exterior cracks into warts or frustules.In this form the receptacle is an entirely closed envelope, inwhich the fructification is completely concealed until it isquite mature, and then it either opens with a small orifice oris irregularly ruptured. Hence the light is not essential tothe perfection of the fruit, and the peridium might almost aswell remain in the soil, which it has a tendency to do in somespecies of Scleroderma, and does completely in the Hypogaei.In the majority