28 October 1996.
Sonora, Mexico
Locality: Estero Cerro Prieto. 16 km northwest of Puerto Penasco. Secretaria de Programacion y Presupuesto, map: H12A32, Puerto Penasco.
Coordinates: 31.4167, -116.6333
(Map it)
Elevation: 1m.
Environment description: California maritime stand tidal salt marsh, regularly inundated, sand, pH 7.45, homogeneous stand of collected species.
Number of plants sampled: 75
Collector(s):