| Classification | Asteraceae: Machaeranthera |
| Classification 1 | Asteraceae: Psilactis |
| Harvard University Herbaria Barcode(s) | 00009962 |
| Type Status | Isotype |
| Collector | G. L. Nesom & C. Wells |
| Collector number | R585 |
| Country | Mexico |
| State | Nuevo León |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Nuevo León |
| Locality | Area of Cerro Pena Nevada, ca. 5 km NE of mountain known locally as Picacho Onofre, ca. 16 km NE of San Antonio Pena Nevada and 35 kn ENE of Doctor Arroyo |
| Date Collected | 1977-07-28 |
| Elevation | 2900 m |
| Habitat | South facing slope among dense, low, shrubs |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/4dd05cb0-da6f-4256-9383-77ce363782aa |
| Harvard University Herbaria Barcode | 00009962 |
| Herbarium | GH |
| Previous ownership | Ex NCU |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Machaeranthera odysseus G. L. Nesom |
| Verified by | D. R. Morgan (TEX) |
| Date Determined | 1990 |
| Taxon Reference | (for Machaeranthera odysseus G. L. Nesom) Syst. Bot. 1979. 3: 218. |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Machaeranthera odysseus G. L. Nesom |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1982 |
| Taxon Reference | (for Machaeranthera odysseus G. L. Nesom) Syst. Bot. 1979. 3: 218. |
| Family | Asteraceae |
| Determination | Psilactis odysseus (G. L. Nesom) D. R. Morgan |
| Determined by | D. R. Morgan (TEX) |
| Date Determined | 1990 |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Machaeranthera odysseus G. L. Nesom |
| Determination Remarks | [label name] |
| Annotation Text | ISOTYPE |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
