| Collector | Holm-Nielsen, L. B. |
| Number | 18858 |
| Collected with | Bravo, E. & Gomez, P. |
| Country | Ecuador |
| Subpart | MANABI |
| County | |
| Locality | Road El Carmen - Empalme, km 24, Río la Esperanza. Secondary vegetation on riverside. |
| Coordinates | 0° 18' S 79° 30' W |
| Minimum elevation (m) | 200 |
| Maximum elevation (m) | 200 |
| Start date | 1979/08/13 |
| End date | 1979/08/13 |
| Family | Cyperaceae |
| Identification | Cyperus chalaranthus Presl |
| Determined by | Camelbeke, K. (GENT), 1994. |
| Identification qualifier | |
| Field notes | Inflorescences brown and green. |