| Classification | Asteraceae: Porophyllum |
| Harvard University Herbaria Barcode(s) | 00011413 |
| Type Status | Isotype |
| Collector | I. M. Johnston |
| Collector number | 3373 |
| Country | Mexico |
| Geography | North America: North America (CA, US, MX) (Region): Mexico |
| Locality | Angel de la Guardia Island, Gulf of California |
| Date Collected | 1921-05-01 |
| Habitat | in rock crevices or gravelly draws |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b85c102d-11bd-45bd-8c1c-a2928d8ad414 |
| Harvard University Herbaria Barcode | 00011413 |
| Herbarium | A |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Porophyllum leptophyllum I. M. Johnston |
| Verified by | Brach, Anthony Robert |
| Date Determined | 2014 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Porophyllum leptophyllum I. M. Johnston) Proc. Calif. Acad. Sci. 1924. 12: 1210. |
| Family | Asteraceae |
| Determination | Porophyllum tridentatum var. crassifolium (Watson) I. M. Johnston |
| Determined by | Johnson, Raymond Roy |
| Date Determined | 1964 |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Porophyllum leptophyllum I. M. Johnston |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
