Zinnia acerosa (DC.) A. Gray
Asteraceae
| Collection Number | C. Davidson 13989 |
| Collectors | C. Davidson, S. R. Christoph |
| Identified By | C. Davidson |
| Source | C. Davidson |
| Date | 09 April 2019 |
| Country | USA |
| state | Arizona |
| county | Pima |
| Location | East Old Spanish Trail highway c. 10.6 km E of junction with South Old Spanish Trail highway (E of Tucson). Acacia-Larrea woodland with Yucca schidigera, Opuntia, Carnegiea. 1031 m elev. |
| Lat/Long | N 32 04 34.9 W 110 38 52.0 |
| Note | Common along the roadside. Shrubby, to 0.3 m tall. |