soredia

from The Collaborative International Dictionary of English v.0.48
Soredia \So*re"di*a\, n.,
   pl. of {Soredium}.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Soredium \So*re"di*um\, n.; pl. {Soredia}. [NL., fr. Gr. ? a
   heap.] (Bot.)
   A patch of granular bodies on the surface of the thallus of
   lichens.
   [1913 Webster]
    

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