Flag for Taxon: Melanoleuca gravis
| Flagger | Content Author | Content | Reason | Flag Created | Resolved by | Resolution |
|---|---|---|---|---|---|---|
| fredojusto | Melanoleuca gravis |
The correct name for this species is Tricholoma grave Peck. This is a very rare taxon, currently being searched for across Eastern North America. |
Sep. 15, 2021 19:28:02 +0000 | jameskm |
Swapped. |
Comments
http://iucn.ekoo.se/iucn/species_view/231720/ - It has been accepted in Tricholoma as part of its assessment for red listing by the fungal group for IUCN
The ITS of modern collections from Quebec e.g. https://www.ncbi.nlm.nih.gov/nuccore/MW627915.1 have its closets matches to species of Tricholoma sensu stricto (T. saponaceum, T. imbricatum, T. atrosquamosum)
At some point Murrill was using the generic name Melanoleuca to include many taxa accepted in Tricholoma and similar genera. Melanoleuca, as accepted today based on morphological and molecular evidence, belongs in the Pluteoid clade, while Tricholoma s. stricto is very distantly related in the Tricholomataceae. Morphologically Tricholoma grave belongs in Tricholoma not in our modern concept of Melanoleuca.
Also accepted in Tricholoma in the modern monograph of Tricholomas of North America https://www.fungimag.com/winter-2013-articles/TricholomaFixed013113LR.pdf
Is there a good recent source justifying placement in one genus or the other? I am not seeing much, and the published sequences seem pretty distant from other Tricholoma sequences.