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Introduction to Fungi, Third Edition

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TUBER (TUBERACEAE)<br />

425<br />

Fig14.7 Tubermelanosporum,theblackorPe¤rigord truffle. (a) Two fruit bodies, weighing 60 g (left) and 40 g (right).One has been cut<br />

open <strong>to</strong> reveal the black fertile (ascospore-containing) regions interspersed by white (sterile) veins. (b) Ascus containing three<br />

mature ascospores.<br />

Fig14.8 (a c) Tuber rufum. (a) Fruit body in surface view and in section showing the veins. (b) Portion of hymenium. (c) Ascus with<br />

four spiny-walled ascospores. (d,e) Tuber puberulum. (d) V.S. ascocarp showing the structure of the peridium and developing asci.<br />

(e) Mature four-spored ascus showing ascospores with reticulate walls.

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