| Collector | Lojtnant, B. |
| Number | 13278 |
| Collected with | Molau, U. |
| Country | Ecuador |
| Subpart | PASTAZA |
| County | |
| Locality | Montalvo, along Río Bobonaza 0-1 km N of the military camp. Partly disturbed rain forest along the river. |
| Coordinates | 2° 5' S 76° 58' W |
| Minimum elevation (m) | 250 |
| Maximum elevation (m) | 250 |
| Start date | 1979/05/16 |
| End date | 1979/05/16 |
| Family | Piperaceae |
| Identification | Piper rotundistipulum Trel. & Yuncker |
| Determined by | J. Brandbyge (AAU), 1981. |
| Identification qualifier | cf. |
| Field notes | Shrub, 3-5 m high. Common. [Piper sp. nov., det. ?] |