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Microsteris gracilis  (Hook.) Greene
Slender phlox
© 2003 Steve Matson
© 2016 Steve Matson
© 2003 Steve Matson
© 2003 Steve Matson
© 2016 Steve Matson
© 2020 Bob Sweatt
© 2023 Dana York
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© 2020 Bob Sweatt
© 2022 Bob Sweatt
© 2023 Jamie Spielmann
© 2025 R.A. Chasey
© 2019 Matt Berger
© 2019 Matt Berger
© 2022 Mike Russler
© 2016 Jim Moore
© 2016 Jim Moore
© 2022 Mike Russler
© 2022 Mike Russler
© 2022 Mike Russler
© 2016 Steve Matson
© 2021 Mike Russler
© 2021 Mike Russler
© 2021 Mike Russler
© 2021 Mike Russler
© 2021 Bob Sweatt
© 2021 Mike Russler
© 2021 Mike Russler
© 2022 Bob Sweatt
© 2022 Bob Sweatt
© 2022 Bob Sweatt
© 2024 David popp
Microsteris gracilis is an annual herb that is native to California, and also found elsewhere in western North America.
also called Phlox gracilis
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
DJJJASONAFMM

Bloom Period
Genus: Microsteris
Family: Polemoniaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland, many plant communities

Name Status:
Accepted by JEF + PLANTS + POWO

Alternate Names:
JEFMicrosteris gracilis ssp. gracilis
JEFMicrosteris gracilis ssp. humilior
JEFMicrosteris gracilis ssp. humilis
JEFMicrosteris gracilis var. gracilis
JEFMicrosteris gracilis var. humilior
More …
Information about  Microsteris gracilis from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (MIGR)

Photos on Calflora

Photos on CalPhotos

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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 03/28/2025).