Macaedium

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A macaedium is the name given to the content of the fruiting bodies of some lichens . It is a powdery mass of spores , remains of the asci and paraphyses . It occurs when the asci disintegrate early in the development of the fruiting body and the spores between the paraphyses mature as a result. A macaedium is formed by the lichen fungi that used to be grouped together in the order Caliciales , which today are divided into several orders, the Coniocybales and the Mycocaliciales . These lichen are also called pin lichen .

The term was introduced by Erik Acharius in 1817 and is derived from the ancient Greek maza = dough . English-speaking authors in particular often used the term for the entire fruiting body.

supporting documents

  • Gerhard Wagenitz : Dictionary of botany. The terms in their historical context. 2nd, expanded edition. Spektrum Akademischer Verlag, Heidelberg / Berlin 2003, ISBN 3-8274-1398-2 , p. 192.