The Arrhenia peltigerina complex—preliminary report
- Author:
- Voitk A., Saar I., Burzynski M. & Corriol G.
- Year:
- 2024
- Journal:
- Botany
- Pages:
- 102: 248–267
- Url:
- https://doi.org/10.1139/cjb-2023-0138
Phylogenetic study of Arrhenia peltigerina revealed a complex of seven divergent clades. Type specimens of Agaricus peltigerinus
and Omphalina cupulatoides fell into separate clades; the latter was recombined as Arrhenia cupulatoides. Four clades were
described as new species: Arr. baltica, Arr. fennoscandica, Arr. mohniensis, and Arr. talpoides; the fifth, with only a single specimen,
was left formally undescribed. These cryptic species are uncommon——more so in North America than Scandinavia——and collections
are often misidentified. Spore measurements separated Arr. baltica from the others by its narrower spores; average
measurements help separate some species a bit better than ranges. So far, Arr. peltigerina was found only in North America, Arr.
mohniensis and Arr. talpoides in both Europe and North America, and the remainder only in Europe. The host species of Peltigera
was Peltigera hymenina for Arr. cupulatoides, Peltigera rufescens for Arr. baltica, and varied for the others. All but one collection
came from soil over calcareous bedrock. Small sample size does not permit assigning high confidence to noted interspecific
differences; these await confirmation by greater experience from future study.
Key words: ITS, Hygrophoraceae, taxonomy.
- Id:
- 36546
- Submitter:
- zpalice
- Post_time:
- Tuesday, 11 June 2024 11:29