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Le Thalle, Les Apothecies Et Les Asques Du Peltigera Rufescens (Weis)Humb. (Discolichen, Peltigeracee)

  • Marie-Agnes Letroutt-Galinou (a1) and R. Lallemant (a2)

Summary

The thallus of Peltigera rufescens has a cladomian structure. It is developed from axial filaments which are lodged in the veins and from which are developed several, short, ventral pleuridia and numerous well-developed, which are developed, dorsal ramifications.

The latter form the remainder of the thallus.

The ascocarps develop directly from a small number of marginal, dorsal pleuridia which form a well-delimited primordium from which is built up a primary corpus, similar to the type formed in graphidian and lecanorian species. To this is added a parathecial apparatus. Although this development is to be qualified lecanorian, certain peculiarities may be noted; these are a very long angiocarpic stadium in the course of which are built up a parathecioid envelope and a marginal crown, the characters of which are intermediate between those of primary and secondary elements.

The asci are bitunicate and ‘archaeascé’.

Copyright

Le Thalle, Les Apothecies Et Les Asques Du Peltigera Rufescens (Weis)Humb. (Discolichen, Peltigeracee)

  • Marie-Agnes Letroutt-Galinou (a1) and R. Lallemant (a2)

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