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Pterostegia drymarioides  Fisch. & C. A. Mey.
Fairy mist,   Woodland threadstem
© 2016 Steve Matson
© 2016 Steve Matson
© 2005 Steve Matson
© 2005 Steve Matson
© 2023 Ron Vanderhoff
© 2016 Steve Matson
© 2019 Ron Vanderhoff
© 2018 Ron Vanderhoff
© 2022 Cynthia Powell
© 2025 R.A. Chasey
© 2025 R.A. Chasey
© 2022 Cynthia Powell
© 2023 Ron Vanderhoff
© 2020 Dick Rawson
© 2023 Mike Russler
© 2023 Mike Russler
© 2024 Mike Russler
© 2016 Steven M Norris
© 2022 Cindy Roessler
© 2019 Diane Etchison
© 2024 Olesya Konovalova
© 2020 Dick Rawson
© 2020 Dick Rawson
© 2020 Dick Rawson
© 2020 Dick Rawson
© 2005 Steve Matson
© 2023 Mike Russler
© 2023 Olesya Konovalova
© 2024 Olesya Konovalova
© 2024 Olesya Konovalova
© 2024 R.A. Chasey
© 2024 Mike Russler
© 2024 Mike Russler
© 2015 Diane Etchison
© 2022 Cindy Roessler
Pterostegia drymarioides is an annual 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
DJJJASONAFMM

Bloom Period
Genus: Pterostegia
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Yellow Pine Forest, Foothill Woodland, Chaparral, Valley Grassland, many plant communities
Name Status:
Accepted by JEF + PLANTS + POWO

Alternate Names:
JEFPterostegia diphylla var. biloba
JEFPterostegia diphylla
JEFPterostegia microphylla
Information about  Pterostegia drymarioides from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (PTDR)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Growth Habits: Pterostegia drymarioides is a very small annual spreading or climbing plant with very thin, hairy stems. The tiny leaves are lobed or heart-shaped and may be green or pink. The plant may sprawl across the ground in a thin layer or may form small patches here and there. The plant bears tiny bright pink flowers. (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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/01/2025).