Asclepias cryptoceras S. Watson
Apocynaceae
| Collection Number | Davidson, C 12840 |
| Collectors | C. Davidson, B. Ertter |
| Identified By | B. Ertter, C. Davidson, June, 2015 |
| Source | C. Davidson |
| Date | 08 June 2015 |
| Country | USA |
| state | Idaho |
| county | Ada |
| Location | Dry slope above Stack Rock Dr., off Spring Creek Way, in turn east off State Highway 55., Boise foothills. 914 m elev. |
| Lat/Long | N 43 41 54.1 W 116 16 53.8 |
| Note | Fruiting stems prostrate. |