22 September 2003.
Oregon, United States
Locality: Ecoregion 78b. Highway 140, left on Obenchain Road, follow until fork. Turn left at 35-1E-35.01. Park at Rock Creek, populations found growing along dried up creek.
Coordinates: 42.4839, -122.6731
(Map it)
Elevation: 472m.
Georeference protocol: Lat/lon determined by GPS
Habitat: Wild Habitat
Environment description: White oak savanna.
Number of plants sampled: 30
Comment: Collectors: Nelson, L : Bureau of Land Management, USA. Area sampled: 5000-10,000 square meters.