| Collector | Holm-Nielsen, L. B. |
| Number | 25466 |
| Collected with | Jaramillo, J. & Coello, F. & Asanza, E. |
| Country | Ecuador |
| Subpart | ESMERALDAS |
| County | |
| Locality | Río San Miguel, one hour upstream from San Miguel de Cayapas. Riverside forest on clay. |
| Coordinates | 0° 43' N 78° 52' W |
| Minimum elevation (m) | 220 |
| Maximum elevation (m) | 220 |
| Start date | 1980/09/01 |
| End date | 1980/09/01 |
| Family | Gesneriaceae |
| Identification | Gasteranthus calcaratus (Kunth)Wiehl. |
| Determined by | Kvist, L.P. (AAU), 1996. |
| Identification qualifier | |
| Field notes | 0.8 m tall. Flowers orange, without spots. |