2016 Hayley Ross 2019 Rachelle Gray 2012 Elizabeth Brusati 2016 Brett Dean 2012 Elizabeth Brusati 2016 Cynthia Powell 2019 Rachelle Gray 2019 Rachelle Gray 2017 Kenneth Unger 2016 Andrew Longman 2014 James Gonsman 2015 Chris Jaster 2016 Brett Dean 2014 Richard Chasey 2014 James Gonsman 2024 DPW Staff 2010 Toni Corelli 2016 Andrew Longman
Helminthotheca echioides is an annual or perennial herb that is not native to California.
[Cal-IPC] Invasive: Helminthotheca echioides (bristly oxtongue) is a winter or summer annual, or occasionally a biennial (family Asteraceae). It is common throughout most of California, except the deserts, and is typically found in seasonally wet places.
Cal-IPC Rating: Limited (link added by Mary Ann Machi)
[Wikipedia] Europe & North Africa native, Troublesome weed: Helminthotheca echioides, known as bristly (or prickly) oxtongue, is a sprawling annual or biennial herb native to Europe and North Africa. It was originally placed within the genus Picris but is often separated within the small genus Helminthotheca alongside a few other (mainly North African) plants which also have the distinctive outer row of bracts around the flowerheads. It is a ruderal plant, found on waste ground and agricultural soils around the world, and in some places it is considered a troublesome weed. (link added by Mary Ann Machi)
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2016 Hayley Ross:!2019 Rachelle Gray:!2012 Elizabeth Brusati:!2016 Brett Dean:!2012 Elizabeth Brusati:!2016 Cynthia Powell:!2019 Rachelle Gray:!2019 Rachelle Gray:!2017 Kenneth Unger:!2016 Andrew Longman:!2014 James Gonsman:!2015 Chris Jaster:!2016 Brett Dean:!2014 Richard Chasey:!2014 James Gonsman:!2024 DPW Staff:!2010 Toni Corelli:!2016 Andrew Longman:!
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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: 12/09/2024).