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Taxon  Report  
Mentzelia laevicaulis  (Hook.) Torr. & A. Gray
Blazing star,   Giant blazingstar,   Smooth stem blazing star,   Smoothstem blazingstar
Mentzelia laevicaulis is a perennial herb that is native to California, and also found elsewhere in western North America.
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
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Bloom Period
Genus: Mentzelia
Family: Loasaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland, many plant communities
Name Status:
Accepted by PLANTS

Information about  Mentzelia laevicaulis from other sources
Nursery availability from CNPLX
This plant is available commercially.
USDA PLANTS Profile (MELA2)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Habitat, Description: Mentzelia laevicaulis is a showy wildflower native to western North America. Its common names include giant blazingstar[1] and smoothstem blazingstar.[1] This is a widespread plant which can be found in sandy, rocky, and disturbed areas, such as roadsides. Description Yellow blazing star (Mentzelia laevicaulis) It grows a weedy-looking, branched stem which may reach a yard in height. The whitish-green stem and its lateral branches bear the occasional triangular sawtoothed leaf. The plant bears capsule fruits containing winged seeds. At the tip of each branch blooms a spectacular yellow flower. The star-shaped flower has five narrow, pointed petals with shiny yellow surfaces, each up to 3 inches long. Between the petals are long, thin yellow sepals. The center of the open-faced flower is filled with a great many whiskery yellow stamens. Beneath the petals are long, curling bracts. (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: 07/19/2024).