| Collector | Madsen, J. E. |
| Number | 50406 |
| Collected with | |
| Country | Ecuador |
| Subpart | PICHINCHA |
| County | |
| Locality | Road Guayllabamba - Ibarra, km 2 from Guayllabamba. Sandy slope with xerophytic vegetation. |
| Coordinates | 0° 3' S 78° 20' W |
| Minimum elevation (m) | 2200 |
| Maximum elevation (m) | 2200 |
| 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 | Plants often more than 1 m high in dense vegetation. Ribs about 9. Spines greyish brown. |