| Classification | Asclepiadaceae: Asclepias |
| Harvard University Herbaria Barcode(s) | 00267324 |
| Type Status | Isosyntype |
| Collector | G. Thurber |
| Collector number | 344 |
| Country | Mexico |
| State | Sonora |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Sonora |
| Locality | [data not captured] |
| Date Collected | 1851-06-** |
| Habitat | Prairies |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/76acae2b-8464-45df-bd90-fdd6000ceadd |
| Harvard University Herbaria Barcode | 00267324 |
| Herbarium | GH |
| Family | Asclepiadaceae |
| Type Status | Isosyntype |
| Isosyntype of | Asclepias brachystephana Engelmann ex Torrey |
| Verified by | W. T. Kittredge |
| Date Determined | 2008 |
| Taxon Reference | (for Asclepias brachystephana Engelmann ex Torrey) Rep. U.S. Mex. Bound., Bot. 1-20 Apr 1859. 163. |
| Family | Asclepiadaceae |
| Determination | Asclepias brachystephana Engelmann ex Torrey |
| Determined by | J. P. Therrien (KANU) |
| Date Determined | 1998-04-** |
| Determination Remarks | [current name] |
| Family | Asclepiadaceae |
| Determination | Asclepias brachystephana Engelmann ex Torrey |
| Determined by | A. Gray |
| Determination Remarks | [A. Gray (scripsit)] |
| Annotation Text | Syn. Fl. N. Amer. |
| Sex | not determined |
| Phenology | FlowerAndFruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
| Item Remarks | [Engelmann's original description in packet] |
