| Collector | Filskov, P. |
| Number | 37316 |
| Collected with | Sondergaard, M. & Gregersen, I. |
| Country | Ecuador |
| Subpart | IMBABURA |
| County | |
| Locality | Ibarra, 0-2 km along the road towards Apacocha. Roadbanks. |
| Coordinates | 0° 21' N 78° 7' W |
| Minimum elevation (m) | 2200 |
| Maximum elevation (m) | 2200 |
| Start date | 1981/11/22 |
| End date | 1981/11/22 |
| Family | Asteraceae |
| Identification | Xanthium spinosum L. |
| Determined by | B. Ollgaard |
| Identification qualifier | |
| Field notes | Local name: Casa marutsja. Use: An infusion from the root is used against in- fections in the urinary system. |