| Specimen ID | 1333301 |
| Group | Algae |
| Genus | Didymosphenia |
| Species | geminata |
| Common Name | didymo |
| State | PA |
| County | Fayette |
| Locality | Johnson Run - River Mile 55.55 |
| Mapping Accuracy | Accurate |
| HUC8 Name | Youghiogheny |
| HUC8 Number | 05020006 |
| HUC10 Name | Middle Youghiogheny River |
| HUC10 Number | 0502000609 |
| HUC12 Name | Opossum Run-Youghiogheny River |
| HUC12 Number | 050200060904 |
| Map | |
| Collection Day | 8 |
| Collection Month | 7 |
| Collection Year | 2012 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker |
| Status | established |
| Reference 1 |
| Ref. Number: | 27462 |
| Author: | iMapInvasives. |
| Date: | 2018 |
| Title: | Pennsylvania iMapInvasives |
| Publisher: | Pennsylvania Natural Heritage Program |
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| Comments | PA iMapInvasives Obs. ID: PA-3511U. Sample collected on July 8th in the afternoon and again on July 13th at 11:45am. Results: Results: Sample #1 had many Didymo |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
