Original paper

Taxonomic relevance of pigment patterns in Arcyria species (Trichiales, Myxomycetes) including Arcyodes incarnata

Rebhahn, Marie-Annett; Schnittler, Martin; Liebermann, Bernd

Nova Hedwigia Band 69 Heft 3-4 (1999), p. 415 - 427

23 references

published: Nov 1, 1999

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To evaluate the relevance of chemical characters as additional tools for the taxonomy of myxomycetes, sporocarp pigments of sixteen taxa of the genera Arcyria and Arcyodes (both Trichiales) were analysed by a thin-layer chromatography method that is easy to perform and reproduce. Focusing on the notoriously difficult group of red-coloured Arcyria species, surprisingly high correspondence for pigment patterns of all investigated specimens belonging to a certain morphospecies was found. The use of pigments for species differentiation is demonstrated by a key for the pigment patterns of Arcyria incl. Arcyodes incarnata. Results of pigment analyses are compared with the classical taxonomy based on morphological characters. A cladistic analysis of the relationships in the genus using both pigments and morphological characters is presented.