| Classification | Asteraceae: Gymnolomia |
| Classification 1 | Asteraceae: Viguiera |
| Barcode(s) | 00008541 |
| Type Status | Holotype |
| Collector | E. W. Nelson |
| Collector number | 2105 |
| Country | Mexico |
| State | Guerrero |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Guerrero |
| Locality | Between Tlapa & Ayusinapa; altitude 4500 - 5700 ft. |
| Date Collected | 1894-12-13 |
| Elevation | 1371 - 1737 m |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/54812661-9dec-4e2f-b948-9d80afca38a8 |
| Harvard University Herbaria Barcode | 00008541 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Gymnolomia megacephala B. L. Robinson & Greenman |
| Verified by | V. M. Bates (A/GH) |
| Date Determined | 1984 |
| Taxon Reference | (for Gymnolomia megacephala B. L. Robinson & Greenman) Proc. Boston Soc. Nat. Hist. 1899. 29: 102. |
| Family | Asteraceae |
| Determination | Viguiera excelsa (Willdenow) Bentham & Hooker f. |
| Determined by | B. L. Turner (TEX) |
| Date Determined | 1989 |
| Determination Remarks | [current name] |
| Annotation Text | var. excelsa |
| Family | Asteraceae |
| Determination | Viguiera excelsa var. megacephala (Robinson & Greenman) S. F. Blake |
| Determined by | S. F. Blake (GH) |
| Date Determined | 1917 |
| Family | Asteraceae |
| Determination | Gymnolomia flava Hemsley |
| Determination Remarks | [label name] |
| Family | Asteraceae |
| Determination | Gymnolomia megacephala B. L. Robinson & Greenman |
| Determined by | B. L. Robinson (GH) & J. M. Greenman (GH) |
| Annotation Text | n. sp. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
