Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
262738
| OR | Benton | Corvallis, slough below Pilkington Nursery | 1949 |
17090003
| Upper Willamette | collected |
262739
| OR | Benton | Corvallis, slough below Pilkington Nursery | 1950 |
17090003
| Upper Willamette | established |
262740
| OR | Benton | foot of bluff east of Pilkington residence | 1955 |
17090003
| Upper Willamette | established |
238677
| OR | Lane | Eugene, between U.S. Highway 99W and Empire Park Road. | 1973 |
17090003
| Upper Willamette | established |
238676
| OR | Lane | Eugene, between U.S. Highway 99W and Empire Park Road. | 1975 |
17090003
| Upper Willamette | established |
238675
| OR | Lane | Eugene, between U.S. Highway 99W and Empire Park Road. | 1981 |
17090003
| Upper Willamette | established |
238678
| OR | Lane | Golden Gardens Park (at end of Golden Garden St) | 1993 |
17090003
| Upper Willamette | established |
262741
| OR | Linn | Tremaines slough, 4 mi. E. of Corvallis | 1952 |
17090003
| Upper Willamette | collected |