2019 Raymond Gill 2019 Raymond Gill 2019 Raymond Gill 2019 Raymond Gill 2016 Jim Moore 2018 Stella Copeland 2014 Ron Wolf 2016 Jim Moore 2013 Philip Brownsey 2012 Zoya Akulova
Cynoglossum officinale is a perennial herb that is not native to California.
[Wikipedia] Found in most parts of Europe: Found in most parts of Europe, and also North America, where it was accidentally introduced[4] including in British Columbia, where it is designated a noxious weed under the British Columbia Weed Control Act.[5] It lives in wet places, sand dunes, waste land and hedges.The plant owes its common and scientific name to the long greyish leaves that are reminiscent of a dog's tongue and were once given as a remedy for dog bites. Cynoglossum officinale contains tumorigenic pyrrolizidine alkaloids.[11] It is toxic to cows and is especially dangerous to pasture owners. (link added by Steve Conger)
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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: 07/12/2025).