Calflora Taxon Report
Riella americana  M. Howe & Underw.
American riella
Riella americana is a liverwort that is native to California.
California Rare Plant Rank: 2B.2 (rare, threatened, or endangered in CA; common 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
~9 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period

Name Status:
Accepted by CNPS + PLANTS
Information about Riella americana from other sources

USDA PLANTS Profile (RIAM6)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

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

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