| Classification | Asclepiadaceae: Asclepias |
| Harvard University Herbaria Barcode(s) | 00967815 |
| Type Status | Holotype |
| Collector | J. T. Rothrock |
| Collector number | 139 |
| Country | United States of America |
| State | California |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Santa Barbara County: Santa Barbara |
| Locality | Bartletts Cañon, Santa Barbara Cal |
| Date Collected | 1875-07-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/832d1e76-1d29-4764-9f79-a2608b3f340d |
| Harvard University Herbaria Barcode | 00967815 |
| Herbarium | GH |
| Family | Asclepiadaceae |
| Type Status | Holotype |
| Holotype of | Asclepias leucophylla var. obtusa A. Gray |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2017 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Asclepias leucophylla var. obtusa A. Gray) Bot. California 1876. 1: 620. |
| Family | Asclepiadaceae |
| Determination | Asclepias erosa Torrey |
| Determined by | [A. Gray (scripsit) annotation on sheet, W. T. Kittredge, 2017] |
| Determination Remarks | [current name] |
| Family | Asclepiadaceae |
| Determination | Asclepias leucophylla var. obtusa A. Gray |
| Determined by | [A. Gray (scripsit) W. T. Kittredge, 2017] |
| Annotation Text | Syn. Fl. N. Amer. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
