| Name | Asclepias leucophylla var. obtusa A. Gray |
| Authorship | A. Gray |
| Rank | Variety |
| Placed in | Asclepias leucophylla Engelmann |
| Citation | 1876 Bot. California 1: 620 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Asclepias leucophylla var. obtusa A. Gray |
| Identification made in | [no date] (1), 2017 (1) |