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Taxon  Report  
Gunnera tinctoria  (Molina) Mirb.
Chilean gunnera
Gunnera tinctoria is a perennial herb (aquatic) that is not native to California.
There is a high risk of this plant becoming invasive in California according to Cal-IPC.
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
Observation Search
~9 records in California
redone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Gunnera
Family: Gunneraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: escaped cultivar
Name Status:
Accepted by JEF + PLANTS

Alternate Names:
JEF + PLANTSGunnera chilensis
Information about  Gunnera tinctoria from other sources

[Cal-IPC] Chile native: Gunnera tinctoria (Chilean Gunnera) is a perennial herb/ (family Gunneraceae) with clusters of purple flowers and large prickly leaves found in the central coast ranges of California. Chilean Gunnera has both female and male flower parts. It is native to Chile. It occurs in grasslands, wetlands, bogs and woodlands. It spreads via seeds and rhizomes. Its seeds are dispersed by birds and water. (link added by Mary Ann Machi)

[www.iucngisd.org] Ecological impact, invasiveness: Law (2003) report that, "G. tinctoria shades out rare and endangered indigenous flora and fauna. The huge leaves of each G. tinctoria mean it can impact on a disproportionately large number of the comparatively small, native herbs. Areas that have been cleared of mature G. tinctoria can become re-colonized with numerous seedlings from the original plants, and pieces of the rhizomes that break off will also re-grow. In areas with harsh winter frosts, G. tinctoria is deciduous or semi-deciduous. Once established, it is very invasive and forms dense colonies that shade-out or suppress desirable flora. These characteristics have contributed to it being a serious threat to indigenous biodiversity values in areas it has invaded ". Weedbusters (2003) report that G. tinctoria can block drains and streams; and obstruct access to natural and recreational areas. (link added by Mary Ann Machi)

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: 07/20/2024).