from The Century Dictionary.

  • noun A genus of fungi, natural order Uredineæ, now believed to be only a subordinate stage in the development of the genera Uromyces and Puccinia, though this has not been demonstrated in regard to all the reputed species.
  • noun [lowercase] pl. æcidia (ē-sid′ i-ä). The cup-like organ (pseudoperidium) characteristic of the genus or form. See pseudoperidium.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) A form of fruit in the cycle of development of the Rusts or Brands, an order of fungi, formerly considered independent plants.


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