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Taxon  Report  
Calyptridium monospermum  Greene
One seeded pussypaws
Calyptridium monospermum 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

Bloom Period
Genus: Calyptridium
Family: Montiaceae  
Category: angiosperm  
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF

Alternate Names:
JEFCistanthe monosperma
PLANTSCistanthe monosperma
Information about  Calyptridium monospermum from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora


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[wildmacro.com] Comparison to C. umbellata: One-seeded pussypaws (Cistanthe monosperma, formerly Calyptridium monospermum) is a North American plant which thrives in gravely soil and raises or lowers its flowers in order to thermoregulate. This common perennial herb is often mistaken for the very similar Mount Hood pussypaws (Cistanthe umbellata), but can be differentiated by multiple stems branching from a single rosette. Some resources place this plant in the miner's lettuce family (Montiaceae). (contributed 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: 05/25/2024).