| Collector | Lojtnant, B. |
| Number | 12933 |
| Collected with | Molau, U. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | S side of Cerro Sumaco, 100-200 m S of the main crater. Ravines in paramo with steep rocks and seepages. |
| Coordinates | 0° 35' S 77° 39' W |
| Minimum elevation (m) | 3700 |
| Maximum elevation (m) | 3800 |
| Start date | 1979/04/29 |
| End date | 1979/04/29 |
| Family | Poaceae |
| Identification | Cortaderia nitida (Kunth)Pilg. |
| Determined by | K. Gludsted & S. Laegaard, 1988 |
| Identification qualifier | |
| Field notes | Forming big tufts. Common. |