28 April 1983.
Salta, Argentina
Locality: 7660-Rosario de Lerma. Cero Negro, 35 km east from the crossing with route 59. 7667-Rosario de Lerma. Cerro Negro, 2 km north from the school.
Coordinates: -25.0333, -65.8667
(Map it)
Elevation: 3400m.
Environment description: On the banks of the Las Arcas River, under bushes.
Collector(s):