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Taxon  Report  
Dodecahema leptoceras  (A. Gray) Reveal & Hardham
Slender horned spineflower,   Slenderhorn spineflower
Dodecahema leptoceras is an annual herb that is native to California, and endemic (limited) to California.
also called Centrostegia leptoceras
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
State of California status: Endangered. Federal status: Endangered.
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
(104 records)
yellowone or more occurrences
within a 7.5-minute quadrangle
bloom graphic
Bloom Period
Genus: Dodecahema
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Habitat: alluvial-fans

Communities: Coastal Sage Scrub, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEF + CNPS + PLANTSCentrostegia leptoceras
JEF + CNPS + PLANTSChorizanthe leptoceras
PLANTSEriogonella leptoceras
Information about  Dodecahema leptoceras from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (DOLE)

Photos on Calflora

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Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/07/2023).