| Classification | Fungi: Basidiomycota: Agaricomycetes: Agaricales: Agaricaceae: Naucoria | 
| Classification 1 | Fungi: Basidiomycota: Agaricomycetes: Agaricales: Agaricaceae: Hebeloma | 
| Harvard University Herbaria Barcode(s) | 00543597 | 
| Type Status | Type,  Holotype | 
| Collector | J. Hruby | 
| Collector number | s.n. | 
| Country | Czech Republic | 
| State | Jihomoravský | 
| Geography | Europe: Europe (Region) (Region): Czech Republic: Jihomoravský | 
| Locality | Moravia: Brünn, Sobesic [Soběšice] | 
| Date Collected | 1927-11-** | 
| Project | Macrofungi TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/4bab339f-9941-4b5e-8f96-288722977ff5 | 
| Harvard University Herbaria Barcode | 00543597 | 
| Herbarium | FH | 
| Family | Agaricaceae | 
| Type Status | Type | 
| Type of | Naucoria petrakii Hruby | 
| Determination Remarks | [label name] | 
| Family | Agaricaceae | 
| Type Status | Holotype | 
| Holotype of | Naucoria petrakii Hruby | 
| Verified by | Henry Beker & Ursula Eberhardt (BR) 2019/20 | 
| Determination Remarks | [filed under] | 
| Family | Agaricaceae | 
| Determination | Hebeloma petrakii (Hruby) Singer | 
| Determined by | Henry Beker & Ursula Eberhardt (BR) 2019/20 | 
| Determination Remarks | [current name] | 
| Annotation Text | This is a synonym of Hebeloma mesophaeum | 
| Subcollection | Hymenomycete Boxed Type Collection | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Box | 
| Preparation Method | Dried |