15 September 2004.
California, United States
Locality: Roe Island, Suisun Bay, Solano County.
Coordinates: 38.0736, -122.0369
(Map it)
Elevation: 3m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Marshy river delta island.
Number of plants sampled: 100
Comment: Boat access only (island); owned by U.S. Navy; population >1000.
Collector(s):