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Collection place
- California23
- North America23
- North Central California[remove]23
- Northern California23
- The Americas23
- United States23
- Butte County, California15
- Feather River/Lower Horvat Creek watershed15
- Oroville, Butte County, California13
- CA-Yol-15 (Guinda site), Capay Valley, Yolo County3
- Capay Valley, Yolo County, California3
- Guinda, Capay Valley, Yolo County3
- Yolo County, California3
- CA-SJo-56 (Old Wheeler), Thornton, San Joaquin County2
- Cox Mound, Gridley, Butte County2
- Gridley, Butte County, California2
- San Joaquin County, California2
- Thornton, San Joaquin County, California2
- near Gridley, Butte County, California2
- CA-Col-2 (Howell's Point), Colusa County, California1