| Collector | Holm-Nielsen, L. B. |
| Number | 5811 |
| Collected with | Jeppesen, S. & Lojtnant, B. & Ollgaard, B. |
| Country | Ecuador |
| Subpart | CARCHI |
| County | |
| Locality | Valle de Maldonado, km 53 on the road Tulcán - Maldonado. Steep slopes in cloud forest. |
| Coordinates | 0° 50' N 78° 3' W |
| Minimum elevation (m) | 3150 |
| Maximum elevation (m) | 3250 |
| Start date | 1973/05/19 |
| End date | 1973/05/19 |
| Family | Orchidaceae |
| Identification | Aa maderoi Schltr. |
| Determined by | Alvarez,A. |
| Identification qualifier | |
| Field notes | Terrestrial, shaded, moist. Flowers white. |
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