| Collector | Madsen, J. E. |
| Number | 50410 |
| Collected with | |
| Country | Ecuador |
| Subpart | IMBABURA |
| County | |
| Locality | Valley Chota. Road Chota - Ibarra, near Tabábuela. Sandy slopes with xerophytic vegetation dominated by Croton and cacti. |
| Coordinates | 0° 29' N 78° 6' W |
| Minimum elevation (m) | 1700 |
| Maximum elevation (m) | 1700 |
| Start date | 1984/03/08 |
| End date | 1984/03/08 |
| Family | Cactaceae |
| Identification | Cleistocactus sepium var. ventimigliae (Riccob.)J. E. Madsen |
| Determined by | J. E. Madsen, 1986 (AAU) |
| Identification qualifier | |
| Field notes | Clone with atypical spination. Compare EC 50409. |