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Introduction to Fungi, Third Edition

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418 HYMENOASCOMYCETES: PEZIZALES (OPERCULATE DISCOMYCETES)<br />

Fig14.2 Pyronemadomesticum. (a) An immature ascus (left).The ascogenous hypha fromwhich itdeveloped continues <strong>to</strong> proliferate.<br />

(b) More magnified view of the tip of an ascogenous hypha showing repeated proliferation.The three stippled cells represent<br />

penultimate cells of croziers probably destined <strong>to</strong> develop in<strong>to</strong> asci. (c) Mature asci, one discharged and showing an operculum. A<br />

paraphysis is also shown apparently arising from the ascogenous hypha.

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