Pezizales
Description 2
The operculate cup-fungi (Pezizales) include most, but not all, of the large fleshy cup-fungi found in the Pacific Northwest and Rocky Mountain region. The group also includes many small to minute (0.3-12 mm diam.) species that are usually overlooked because of their size, color, and/or habitat (e.g., dung of various types). All cup-fungi are Ascomycetes and produce their spores within a sac-like cell (the ascus, pl. asci) which together with the hair-like filaments (the paraphyses), make up the fertile layer (the hymenium) that usually lines the interior or upper surface of the fruiting body. The differentiation between the operculate cup-fungi and their cousins, the inoperculate cup-fungi, is based primarily on the fact that the operculate cup-fungi eject their spores through an opening in the ascus apex formed by an irregular tear, an apical split, or an apical to sub-apical flap or lid-like structure, the operculum (from which the group obtains its name), while the inoperculate cup-fungi eject their spores through a pore in the ascus apex. This differentiation is therefore based upon a microscopic character that is visible neither to the naked eye or even through the use of a handlens.
Summary 3
The Pezizales are an order of the subphylum Pezizomycotina within the phylum Ascomycota. The order contains 16 families, 199 genera, and 1683 species. It contains a number of species of economic importance, such as morels, the black and white truffles, and the desert truffles. The Pezizales can be saprobic, mycorrhizal, or parasitic on plants. Species grow on soil, wood, leaves and dung. Soil-inhabiting species often fruit in habitats with a high pH and low content of...
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- Adaptado por W.Coyote de uma obra de (c) Wikipedia, alguns direitos reservados (CC BY-SA), https://en.wikipedia.org/wiki/Pezizales
