| Classification | Asteraceae: Parthenium | 
| Harvard University Herbaria Barcode(s) | 00010899 | 
| Type Status | Syntype,  Lectotype | 
| Collector | Edw. Palmer | 
| Collector number | 648 | 
| Country | Mexico | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico | 
| Locality | States of Coahuila and Nuvo Leon; Parras | 
| Date Collected | 1880-10-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/082ac3b3-9d90-436d-8d9b-d2da58dc5209 | 
| Harvard University Herbaria Barcode | 00010899 | 
| Herbarium | GH | 
| Family | Asteraceae | 
| Type Status | Syntype | 
| Syntype of | Parthenium confertum A. Gray | 
| Verified by | V. M. Bates (A/GH) | 
| Date Determined | 1983 | 
| Determination Remarks | "Gregg #86; Palmer #648" noted on label; "Type Sheet Parthenium confertum Gray Proc Am Ac 17: 216 (1882) based entirely upon Gregg 1847-49, from Parras & Palmer 648" written on sheet | 
| Taxon Reference | (for  Parthenium confertum A. Gray) Proc. Amer. Acad. Arts 1882. 17: 216. | 
| Family | Asteraceae | 
| Type Status | Lectotype | 
| Lectotype of | Parthenium confertum A. Gray | 
| Verified by | Harvard University Herbaria LAPI Team | 
| Date Determined | 2008-07-15 | 
| Taxon Reference | (for  Parthenium confertum A. Gray) Proc. Amer. Acad. Arts 1882. 17: 216. | 
| Family | Asteraceae | 
| Determination | Parthenium confertum var. confertum | 
| Determined by | R. C. Rollins | 
| Date Determined | 1946 | 
| Determination Remarks | [current name] | 
| Family | Asteraceae | 
| Determination | Parthenium confertum A. Gray | 
| Determined by | R. Cornelius | 
| Date Determined | 1933-05-** | 
| Annotation Text | No. 648 | 
| Family | Asteraceae | 
| Determination | Parthenium confertum A. Gray | 
| Determination Remarks | [label name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed | 
| Item Remarks | Mounted on the right side of sheet with other syntypes Gregg 25 (barcode 10900) on the left and Gregg 86 (barcode 257774) in the center |