Czech Mycology 76(1): 17–32             Article published online: 23rd February, 2024 doi: 10.33585/cmy.76102

KOUKOL O., LUKÁČOVÁ K., BARAL H. -O.

Phylogenetic placement of Sarcotrochila alpina, the hitherto unknown teleomorph of Rhabdocline laricis.

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Abstract

Sarcotrochila alpina (type species of the genus Sarcotrochila) has long been known as a saprotroph colonising larch needles in litter. During a survey of mycobiota colonising needles in litter, we regularly observed apothecia of this species on larch needles cultivated in damp chambers, and isolated the fungus from its ascospores into culture. Analysis of ITS rDNA obtained from these cultures revealed a surprising connection to the anamorph-typified species Rhabdocline (= Meria) laricis, a weak pathogen of European larch. A new combination, Rhabdocline alpina, is proposed, reflecting their conspecificity and the priority of the epitheton alpina. A proposal to protect the much more often used generic name Rhabdocline against the older Sarcotrochila is planned. The morphology of the species in vital condition is presented, and for the two examined type specimens of Orbilia retrusa and Hyalinia nostra (both synonyms of R. alpina) in dead condition. A comparison of our findings with descriptions in the literature is presented.


Keywords:     Meria laricis, Larix decidua, phylogeny, vital characteristics, ascospore morphology.

Article history: received 30 November 2023, revised 24 January 2024, accepted 26 January 2024, published online 23 February 2024

Full citation:

Koukol O., Lukáčová K., Baral H. -O. (2024): Phylogenetic placement of Sarcotrochila alpina, the hitherto unknown teleomorph of Rhabdocline laricis. – Czech Mycology 76(1): 17–32. copy to clipboard


doi: 10.33585/cmy.76102

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