| Classification | Aristolochiaceae: Aristolochia | 
| Harvard University Herbaria Barcode(s) | 00035999 | 
| Type Status | Isotype | 
| Collector | C. H. Muller & M. T. Muller | 
| Collector number | 1014 | 
| Country | Mexico | 
| State | Nuevo León | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Nuevo León | 
| Locality | Sierra Madre Oriental, flats and foothills below Pablillo, about 15 miles southwest of Galeana | 
| Date Collected | 1934-07-04 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/99e26dbb-4ff5-448b-b771-044f6a855384 | 
| Harvard University Herbaria Barcode | 00035999 | 
| Herbarium | GH | 
| Family | Aristolochiaceae | 
| Type Status | Isotype | 
| Isotype of | Aristolochia secunda Pfeifer | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Aristolochia secunda Pfeifer) Taxon. Rev. Pentand. Sp. Aristolochia 1970. 41. | 
| Sex | not determined | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |