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Taxon  Report  
Calycadenia oppositifolia  (Greene) Greene
Butte county calycadenia
Calycadenia oppositifolia is an annual herb that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 4.2 (limited distribution).   CNDDB
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
(279 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Calycadenia
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 2.6 - strong indicator

Communities: Foothill Woodland, Chaparral, Valley Grassland

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEF + PLANTSHemizonia oppositifolia
More information about  Calycadenia oppositifolia

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 10/06/2022).