Calflora Taxon Report
Urtica urens  L.
Annual stinging nettle, Dwarf nettle
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2019 Gary McDonald
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2022 Ron Vanderhoff
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2021 Ron Vanderhoff
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2022 R.A. Chasey
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2023 Ron Vanderhoff
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2019 johngarrett
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2025 jrcowles
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2022 R.A. Chasey
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2022 R.A. Chasey
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2022 Ron Vanderhoff
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2022 Ron Vanderhoff
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2023 Samantha Olguin
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2021 Ron Vanderhoff
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2021 Ron Vanderhoff
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2020 ronvanderhoff
Urtica urens is an annual herb that is not native to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Urtica
Family: Urticaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot
Toxicity: Severe skin irritation from touching the leaf or stem of this plant.

Habitat: disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by JEF + PLANTS + POWO
External links:

Ensikat et al.: Distribution, Ecology, Chemistry and Toxicology of Plant Stinging Hairs: Since the middle of the 20th century, neurotransmitters (acetylcholine, histamine, serotonin) have been repeatedly detected in stinging hairs of Urticaceae...

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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