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Taxon  Report  
Geothallus tuberosus  Campb.
Campbell's liverwort
Geothallus tuberosus is a liverwort that is native to California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
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
~39 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle

Name Status:
Accepted by CNPS + PLANTS
Information about  Geothallus tuberosus from other sources
USDA PLANTS Profile (GETU3)

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[Wikipedia] Endemic to California, Habitat: Geothallus is a monotypic genus of liverwort in the family Sphaerocarpaceae family. It includes only the single species Geothallus tuberosus. Its common name is Campbell's liverwort. It is endemic to California, where it is known only from San Diego and Riverside Counties.[3] This liverwort grows in moist coastal scrub habitat and vernal pools. At least one population occurs on the grounds of Marine Corps Base Camp Pendleton,[3] and it has also been noted on the Santa Rosa Plateau.[1] (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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/21/2025).