cleistothecium

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Related to cleistothecia: apothecium, apothecia

cleis·to·the·ci·um

 (klī′stə-thē′sē-əm)
n. pl. cleis·to·the·ci·a (-sē-ə) Botany
A closed spherical ascocarp.

[New Latin : Greek kleistos, closed (from kleiein, to close) + Greek thēkion, small case, diminutive of thēkē, receptacle; see dhē- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun1.cleistothecium - closed spore-bearing structure of some fungi (especially Aspergillaceae and Erysiphaceae) from which spores are released only by decay or disintegration
ascocarp - mature fruiting body of an ascomycetous fungus
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References in periodicals archive ?
In the case Coprotiella differs from Coprotus in possessing cleistothecia which remain closed at all stages of development and asci which are subglobose to clavate an probably irregulary disposed Coprotiella is also similar to Cleistothelebolus Malloch et Cain and Lasiobolidium Malloch et Cain but differs primarily from both genera in having ascospores possessing de Bary bubbles.
nidulans was found to form cleistothecia in the human body (33), clinical isolates often lose their ability to form sexual reproductive structures and ascospores (34,35).
Cleistothecia were observed after 2 weeks of incubation on potato dextrose agar and cornmeal agar (Figure 1, C).
Spores released from the over-wintering fruiting bodies of the disease known as cleistothecia can cause infections in new shoots and leaves, and wettable sulfur is very effective at stopping these infections.
The organism was subcultured on Cornmeal Agar and brown-black cleistothecia containing numerous ascospores were observed following 14 days of incubation.