| Classification | Asclepiadaceae: Vincetoxicum | 
| Classification 1 | Asclepiadaceae: Cynanchum | 
| Barcode(s) | 00046502 | 
| Type Status | Syntype | 
| Collector | Edw. Palmer | 
| Collector number | 823 | 
| Country | Mexico | 
| State | Nuevo León | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Nuevo León | 
| Locality | Sierra Madre 40 miles south of Saltillo | 
| Date Collected | 1880-07-** | 
| Remarks | = Cynanchum kunthii (Decne.) Standl., det. M. Fishbein, 1997 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d2f8eb10-aa84-440b-99de-8820b31d4a53 | 
| Harvard University Herbaria Barcode | 00046502 | 
| Herbarium | GH | 
| Family | Asclepiadaceae | 
| Type Status |  Syntype | 
| Syntype of |  Vincetoxicum mexicanum S. Watson | 
| Verified by | M. Fishbein | 
| Taxon Reference | (for  Vincetoxicum mexicanum S. Watson) Proc. Amer. Acad. Arts 1883. 18: 115. | 
| Family | Asclepiadaceae | 
| Determination |  Cynanchum kunthii (Decaisne) Standley | 
| Determined by | M. Fishbein | 
| Determination Remarks |  [current name] | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |