| Collector | Madsen, J. E. |
| Number | 64027 |
| Collected with | |
| Country | Ecuador |
| Subpart | GUAYAS |
| County | |
| Locality | Isla Punà. Vicinity of Cerro Zambapala. Semi-deciduous forest canopy with Ceiba pentandra and Bombax ruizii and evergreen understory. Further numerous epiphytes and vines. |
| Coordinates | 2° 58' S 80° 13' W |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 300 |
| Start date | 1987/10/07 |
| End date | 1987/10/08 |
| Family | Cactaceae |
| Identification | Pilosocereus tweedyanus (Britton & Rose)Byles & G. Rowley |
| Determined by | J. Madsen, 1987 |
| Identification qualifier | |
| Field notes | Arborescent, 5 m high. Sterile. Few plants at top of Zambapala. |
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