Cirsium undulatum (Nutt.) Spreng.
Asteraceae
| Collection Number | C. Davidson 13710 |
| Collectors | C. Davidson, S. R. Christoph |
| Identified By | D. Giblin, (WTU), X/2017 |
| Source | C. Davidson |
| Date | 15 July 2017 |
| Country | USA |
| state | Idaho |
| county | Boise |
| Location | Scott Mtn. Lookout Rd. (FS 555) heading N from Banks-Lowman Rd (Hwy 17). Ca. 1.2 km from junction with Hwy 17. Elev. 1177 m. |
| Lat/Long | N 44 04 48.2 W 115 45 17.0 |
| Note | Coarse rocky talus along roadside in ponderosa-doug fir forest. 0.5 m tall. Flowers pale lilac. |