| Classification | Lichens: Verrucaria |
| Harvard University Herbaria Barcode(s) | 00302940 |
| Collector | J. W. Thomson |
| Collector number | 23690 |
| Country | United States of America |
| State | Wisconsin |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Wisconsin: Walworth County |
| Locality | 10 mi E of Whitewater |
| Date Collected | 1945-05-25 |
| Habitat | on limestone rock on prairie hillslope |
| Container | Wisconsin Lichens |
| Substrate | on rock [saxicolous] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5a24f1ef-e10f-4d37-a732-922c9b188fa9 |
| Harvard University Herbaria Barcode | 00302940 |
| Herbarium | FH |
| Previous ownership | [ex Herbarium WIS] |
| Determination | Verrucaria nigrescens Persoon |
| Determination Remarks | [is filed under name] [is label name] [is Current name] |
| Preparation Type | Packet |
| Preparation Method | Dried |
