• WordNet 3.6
    • n Pyrenomycetes class of fungi in which the fruiting body is a perithecium; includes powdery mildews and ergot and Neurospora
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Century Dictionary and Cyclopedia
    • pyrenomycetes An order of ascomycetous fungi of parasitic or saprophytic habit, with the tissues usually hard and somewhat coriaceous. The asci are long and club-shaped, usually containing eight spores, and are produced in deep flask-shaped cavities or perithecia. This order includes a large number of exceedingly injurious fungi which attack and destroy plants and also insects. The ergot. Claviceps purpurea, and the black-knot, Sphæria morbosa of cherry- and plum-trees, are familiar examples. The most destructive diseases of the grape are, also due to members of this order, such as the black-rot, Physalospora Bidwellii, and the powdery grape-mildew, Uncinula spiralis or Oïdium Tuckeri. See ergot, for cut and description; also black-knot, Sphæria and Valsa, grape-mildew, Phoma, Uncinula, Oïdium, Phyllosticta.
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Chambers's Twentieth Century Dictionary
    • Pyrenomycetes pī-rē-nō-mī-sē′tez an order of ascomycetous fungi, including ergot, black-rot, &c.
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Chambers's Twentieth Century Dictionary
Gr. pyren, a stone, mykēs, pl. mycētes, a mushroom.


In literature:

Exoascineae, Saccharomycetineae, Perisporinea, Discomycetes, Pyrenomycetes, Tuberineae, Laboulbeniineae.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3" by Various