| Collector | Madsen, J. E. |
| Number | 36802 |
| Collected with | |
| Country | Ecuador |
| Subpart | TUNGURAHUA |
| County | |
| Locality | Ambato, 7 km W of the town, along Río Ambato. Steep, N-facing dry slope, dominated by cacti, agaves, and bromeliades. |
| Coordinates | 1° 18' S 78° 41' W |
| Minimum elevation (m) | 3000 |
| Maximum elevation (m) | 3000 |
| Start date | 1981/11/04 |
| End date | 1981/11/04 |
| Family | Cactaceae |
| Identification | Opuntia soederstromiana Britton & Rose |
| Determined by | J. Madsen, 1986 |
| Identification qualifier | |
| Field notes | Plant 0.5-1.0 m tall. Joints up to 20 cm long. Spines 5-10, nearly white with darker tips, max. 3 cm long. Flower dark yellow, later reddish as the flower wither. Fruit oblong, 3-4 cm, spiny, red. |
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