| Classification | Asteraceae: Porophyllum |
| Harvard University Herbaria Barcode(s) | 00011426 |
| Type Status | Holotype |
| Collector | Edw. Palmer |
| Collector number | 279 |
| Country | Mexico |
| State | Sonora |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Sonora: Guaymas |
| Locality | [no additional data] |
| Date Collected | 1887-10-** |
| Habitat | Exposed rocks in the mts. [mountains] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5286824c-d85e-4c62-ade7-320233273186 |
| Harvard University Herbaria Barcode | 00011426 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Porophyllum seemannii Schultz Bipontinus |
| Determination Remarks | [is label name] |
| Annotation Text | var. |
| Family | Asteraceae |
| Determination | Porophyllum pausodynum B. L. Robinson & Greenman |
| Determination Remarks | Pencilled on sheet above collector label |
| Annotation Text | n. sp. |
| Family | Asteraceae |
| Determination | Porophyllum pausodynum B. L. Robinson & Greenman |
| Determined by | B. L. Robinson (GH) |
| Date Determined | 1911 |
| Family | Asteraceae |
| Determination | Porophyllum pausodynum B. L. Robinson & Greenman |
| Determined by | B. L. Turner (LL/TEX) |
| Date Determined | 1990 |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Porophyllum pausodynum B. L. Robinson & Greenman |
| Verified by | Harvard University Herbaria LAPI Team |
| Date Determined | 2008-07-01 |
| Determination Remarks | "E. Palmer 279" noted on label |
| Taxon Reference | (for Porophyllum pausodynum B. L. Robinson & Greenman) Proc. Amer. Acad. Arts 1896. 32: 32. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
