| Collector | Madsen, J. E. |
| Number | 85957 |
| Collected with | |
| Country | Ecuador |
| Subpart | LOJA |
| County | |
| Locality | Parque Nacional Podocarpus. Above Nudo de Cajanuma, trail to Mirador. Montane forest below tree limit. |
| Coordinates | 4° 5' S 79° 10' W |
| Minimum elevation (m) | 2900 |
| Maximum elevation (m) | 3000 |
| Start date | 1989/04/10 |
| End date | 1989/04/10 |
| Family | Orchidaceae |
| Identification | Oncidium macranthum Lindl. |
| Determined by | C.H. Dodson (MO), 1991. |
| Identification qualifier | |
| Field notes | Epiphyte. Inflorescence to 1 m long, twining. Flowers yellow. FAA available at AAU. |
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