| Collector | Madsen, J. E. |
| Number | 36821 |
| 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 | Opuntia pubescens Wendl. ex Pfeiffer |
| Determined by | J.E. Madsen, 1990 |
| Identification qualifier | |
| Field notes | Plant up to 20 cm tall (2 flowering specimens were 30 cm). Joints oblong, no tendency to width. Flowers 3.5 cm long, 4 cm in diameter, light yellow. Petals with a weak red gleam. |