| Collector | Madsen, J. E. |
| Number | 36824 |
| Collected with | |
| Country | Ecuador |
| Subpart | LOJA |
| County | |
| Locality | Catamayo, 2 km on the road to El Tambo. A very thorny scrub, where cacti are the most dominating plants. |
| Coordinates | 4° 0' S 79° 23' W |
| Minimum elevation (m) | 1200 |
| Maximum elevation (m) | 1200 |
| Start date | 1981/11/27 |
| End date | 1981/11/27 |
| Family | Cactaceae |
| Identification | Cleistocactus icosagonus (H.B.K)F.A.C. Weber |
| Determined by | J. Madsen, 1986 |
| Identification qualifier | |
| Field notes | Low climbing plant, 3 cm in diameter, 8 ribbes. Spines honey-yellow. Only few plants at the locality, and they grow on a steep slope. |
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