2017 Henry DiRocco 2020 Aaron Echols 2022 Ron Vanderhoff 2022 David Strauch 2022 David Strauch 2024 Ron Vanderhoff 2018 James Bailey 2024 Joan Miller 2018 michelle peruzzi 2017 B.J. Dion 2022 Nathan Dendinger 2023 Ron Vanderhoff 2023 Ron Vanderhoff 2023 Ron Vanderhoff 2022 Ron Vanderhoff 2022 Bob Sill 2021 Aaron Echols 2017 b potts 2012 Carl Spencer 2021 Theresa Lane 2021 James Bailey 2022 Theresa Lane 2022 Ron Vanderhoff 2022 Ron Vanderhoff 2022 Robin Carter-Ervin
Ricinus communis is a shrub that is not native to California.
[Wikipedia] Native Range, Invasiveness: Although Ricinus communis is indigenous to the southeastern Mediterranean Basin, Eastern Africa, and India, today it is widespread throughout tropical regions.[5] In areas with a suitable climate, castor establishes itself easily where it can become an invasive plant and can often be found on wasteland. (link added by Mary Ann Machi)
[Wikipedia] Allergenicity and toxicity: Ricinus is extremely allergenic, and has an OPALS allergy scale rating of 10 out of 10. The plant is also a very strong trigger for asthma, and allergies to Ricinus are commonplace and severe.[20]
The castor oil plant produces abundant amounts of very light pollen, which easily become airborne and can be inhaled into the lungs, triggering allergic reactions. The sap of the plant causes skin rashes. People who are allergic to the plant can also develop rashes from touching the leaves, flowers, or seeds. They can also have cross-allergic reactions to latex sap from the related Hevea brasiliensis plant. (link added by Mary Ann Machi)
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2017 Henry DiRocco:!2020 Aaron Echols:!2022 Ron Vanderhoff:!2022 David Strauch:!2022 David Strauch:!2024 Ron Vanderhoff:!2018 James Bailey:!2024 Joan Miller:!2018 michelle peruzzi:!2017 B.J. Dion:!2022 Nathan Dendinger:!2023 Ron Vanderhoff:!2023 Ron Vanderhoff:!2023 Ron Vanderhoff:!2022 Ron Vanderhoff:!2022 Bob Sill:!2021 Aaron Echols:!2017 b potts:!2012 Carl Spencer:!2021 Theresa Lane:!2021 James Bailey:!2022 Theresa Lane:!2022 Ron Vanderhoff:!2022 Ron Vanderhoff:!2022 Robin Carter-Ervin:!
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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]. 2024. Berkeley, California:The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 12/04/2024).