| Classification | Asteraceae: Haplopappus |
| Classification 1 | Asteraceae: Machaeranthera |
| Classification 2 | Asteraceae: Xanthisma |
| Classification 3 | Asteraceae: Haplopappus |
| Harvard University Herbaria Barcode(s) | 00008711 |
| Type Status | Isotype |
| Collector | I. M. Johnston |
| Collector number | 3529 |
| Country | Mexico |
| State | Baja California Norte |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Baja California Norte |
| Locality | South San Lorenzo Island |
| Date Collected | 1921-05-09 |
| Habitat | In gravelly soil principally along the beach |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/6b71397f-d930-45b9-873c-e34df18fdf4a |
| Harvard University Herbaria Barcode | 00008711 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Haplopappus arenarius var. incisifolius I. M. Johnston |
| Determination Remarks | = [is label name] |
| Annotation Text | Aplopappus arenarius incisifolius n. var. Isotype |
| Family | Asteraceae |
| Determination | Machaeranthera pinnitifida (Hooker) Shinners |
| Determined by | R. L. Hartman (TEX) |
| Date Determined | 1975 |
| Annotation Text | s. lat. (Haplopappus spinulosus subsp. incisifolius) |
| Family | Asteraceae |
| Determination | Xanthisma incisifolia (I. M. Johnston) G. L. Nesom |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Haplopappus arenarius var. incisifolius I. M. Johnston |
| Verified by | D. E. Boufford (A) |
| Date Determined | 1983 |
| Determination Remarks | "Aplopappus" on typification label |
| Taxon Reference | (for Haplopappus arenarius var. incisifolius I. M. Johnston) Proc. Calif. Acad. Sci. 1924. 12: 1190. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
