| Collector | Balslev, H. |
| Number | 10521 |
| Collected with | Madsen, E. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Cuyuja. Along muletrack passing through montane forest S of Río Papallacta. |
| Coordinates | 0° 23' S 77° 58' W |
| Minimum elevation (m) | 2500 |
| Maximum elevation (m) | 2650 |
| Start date | 1976/11/01 |
| End date | 1976/11/01 |
| Family | Orchidaceae |
| Identification | Oncidium olivaceum H.B.K. |
| Determined by | C.H. Dodson (MO), 1991. |
| Identification qualifier | |
| Field notes | Epiphyte on a tree in a forest clearing. Tepals brown, labium light violet with dark violet spots. |
This record