| Harvard University Herbaria Barcode(s) | 01006968 | 
| Collector | P. F. May | 
| Collector number | 3303 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Worcester County: Princeton | 
| Locality | Wachusett Mountain State Reservation, Site 1A (W end of Cogbill T1), ca. 150-200 m W of Ski Trail #5, above ledge, ca. | 
| Georeference | 42° 29' N, 71° 53' W | 
| Date Collected | 1997-07-08 | 
| Elevation | 475 - 500 m | 
| Habitat | old growth oak [Quercus]/northern-hardwood forest on steep (up to 45º) N-facing slope | 
| Container | Lichens of Wachusett Mountain | 
| Substrate | [on bark, corticolous]; on bark of Quercus rubra | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/2edb2024-54e2-4d49-a5b7-93537ee998ba | 
| Harvard University Herbaria Barcode | 01006968 | 
| Herbarium | FH | 
| Previous ownership | ex Herbarium of Philip F. May | 
| Determination | Pertusaria macounii (I. M. Lamb) Dibben | 
| Determined by | May, Philip F. | 
| Determination Remarks | [filed under] [label name] [current name] | 
| Annotation Text | UV deep orange, med P+, C-, K+ yel, cortex C-, KC-, spores 125-165; [additional information in packet] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Packet | 
| Preparation Method | Dried |