| Collector | Madsen, J. E. |
| Number | 63968 |
| Collected with | |
| Country | Ecuador |
| Subpart | AZUAY |
| County | |
| Locality | Road Cuenca-Loja, at Río Leon (before Oña). Desert. |
| Coordinates | 3° 25' S 79° 9' W |
| Minimum elevation (m) | 1800 |
| Maximum elevation (m) | 2000 |
| Start date | 1987/09/17 |
| End date | 1987/09/17 |
| Family | Cactaceae |
| Identification | Cleistocactus icosagonus (H.B.K)F.A.C. Weber |
| Determined by | J. Madsen, 1987 |
| Identification qualifier | |
| Field notes | Prostrate to suberect, branching limited. Flowers pink. Limb widely expanded. Filaments pink above. Anthers and stigmas yellow. Nectar stealing ants present. Fruits green. |
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