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Sphaerotheca
noun
Sphaero·the·ca
\-ˈthēkə\
Definition of Sphaerotheca
: a genus of powdery mildews (family Erysiphaceae) having perithecia with one ascus and unbranched appendages that resemble hyphae — see hop mildew
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Origin and Etymology of sphaerotheca
New Latin, from sphaer- + theca
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