| Collector | Madsen, J. E. |
| Number | 7529 |
| Collected with | |
| Country | Ecuador |
| Subpart | LOJA/AZUAY |
| County | |
| Locality | A few km S of Oña. Dry slopes dominated by Croton, Dodonaea, and xerophytic plants. |
| Coordinates | 3° 30' S 79° 11' W |
| Minimum elevation (m) | 2200 |
| Maximum elevation (m) | 2200 |
| Start date | 2000/11/15 |
| End date | 2000/11/15 |
| Family | Cactaceae |
| Identification | Cleistocactus icosagonus (H.B.K)F.A.C. Weber |
| Determined by | |
| Identification qualifier | |
| Field notes | Suberect, the stems to 60 cm high. Flowers pink, 6.5-7 cm long. In steep rocky terrain. Liquid material available at AAU. |
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