| Collector | Peterson, P.M. |
| Number | 12661 |
| Collected with | R.J.Soreng, C.R.Annable & S. Laegaard |
| Country | Bolivia |
| Subpart | La Paz |
| County | |
| Locality | Loayza. 15.5 mi NW of Villa Loza and 1 mi above Urmiri. Steep rocky slopes with Schinus molle, Dodonaea, Cassia and Stipa ichu. Brittle culms |
| Coordinates | |
| Minimum elevation (m) | 3400 |
| Maximum elevation (m) | 3400 |
| Start date | 1993/03/05 |
| End date | 1993/03/05 |
| Family | Poaceae |
| Identification | Jarava leptostachya (Griseb.) F.Rojas |
| Determined by | S. Lægaard |
| Identification qualifier | |
| Field notes | |