2020 Bob Sweatt 2022 Mike Russler 2022 Mike Russler 2007 Steve Matson 2022 Mike Russler 2007 Steve Matson 2022 Mike Russler 2023 Mike Russler 2024 Alaine Arslan 2024 Alaine Arslan 2023 Mike Russler 2023 Mike Russler 2022 Alaine Arslan 2022 Alaine Arslan 2022 Mike Russler 2022 Mike Russler 2020 Bob Sweatt 2016 Judy and Barry Breckling
Polygonum douglasii is an annual herb that is native to California, and also found elsewhere in North America and beyond.
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2020 Bob Sweatt:!2022 Mike Russler:!2022 Mike Russler:!2007 Steve Matson:!2022 Mike Russler:!2007 Steve Matson:!2022 Mike Russler:!2023 Mike Russler:!2024 Alaine Arslan:!2024 Alaine Arslan:!2023 Mike Russler:!2023 Mike Russler:!2022 Alaine Arslan:!2022 Alaine Arslan:!2022 Mike Russler:!2022 Mike Russler:!2020 Bob Sweatt:!2016 Judy and Barry Breckling:!
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Suggested Citation
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 04/21/2025).
