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Cyclospermum leptophyllum  (Pers.) Sprague ex Britton & P. Wilson
Marsh parsley
© 2021 Ron Vanderhoff
© 2023 Ron Vanderhoff
© 2017 Angelique Herman
© 2023 Ron Vanderhoff
© 2023 Ron Vanderhoff
© 2018 Ron Vanderhoff
© 2023 Jim Xerogeanes
© 2023 Ron Vanderhoff
© 2022 Phil Johnson
© 2022 Phil Johnson
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© 2021 Doug Allshouse
© 2019 Robert Oreglia
© 2019 Robert Oreglia
© 2019 Robert Oreglia
© 2019 Robert Oreglia
© 2023 Jim Xerogeanes
Cyclospermum leptophyllum is an annual herb that is not native to California.
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: Cyclospermum
Family: Apiaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands:
Arid West: Occurs usually in non wetlands, occasionally in wetlands
Mountains, Valleys and Coast: Occurs in non wetlands

Name Status:
Accepted by JEF + PLANTS + POWO

Alternate Names:
JEF + PLANTSApium leptophyllum
PLANTSApium tenuifolium
ICPNCiclospermum leptophyllum
PLANTSCyclospermum ammi
Information about  Cyclospermum leptophyllum from other sources

[Wikipedia]: The 1889 book 'The Useful Native Plants of Australia’ records that a common name included "Wild Parsley" and that "It is worthy of note that this plant (in common with others of the genus) is sometimes acrid and injurious when grown in damp soils. It is, doubtless, capable of much improvement by careful cultivation. This plant is not endemic to Australia." (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: 03/31/2025).