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Taxon  Report  
Piperia yadonii  Rand. Morgan & Ackerman
Yadon's piperia,   Yadon's rein orchid
Piperia yadonii is a perennial herb that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
Federal status: Endangered.
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
Observation Search
~309 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
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Bloom Period
Genus: Piperia
Family: Orchidaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Habitat: coastal

Communities: Northern Coastal Scrub, Closed-cone Pine Forest, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS + POWO
Alternate Names:
iNatPlatanthera yadonii
Information about  Piperia yadonii from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (PIYA)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[elkhornsloughctp.org] Habitat: Habitat Confined to three habitats: 1) maritime chaparral, with Hookers manzanita (Arctostaphylos hookeri ssp. hookeri); 2) Monterey pine (Pinus radiata) forest, sometimes with Gowen cypress (Hesperocyparis goveniana); 3) Monterey cypress (Hesperocyparis macrocarpa) forest. The populations in woodland communities occur under partial canopy cover in an open mostly herbaceous understory (Morgan and Ackerman 1990). (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: 05/15/2025).