Gairdner's Yumpah [Perideridia gairdneri (H. & A.) Math. ssp. gairdneri]

Gairdner's Yumpah [Perideridia gairdneri (H. & A.) Math. ssp. gairdneri]

Listing CNPS List 4 R-E-D Code 1-2-3

State/Federal. Status -- /C2 APIACEAE Jun.-Oct.

Global Rank G5T3 State Rank S3.2

Distribution: San Diego County, Kern County, Monterey County, Napa County, Santa Clara County, Santa Cruz County, San Luis Obispo County, Solano County, and Sonoma County

Habitat: Broad-leafed Upland Forest and Chaparral are some reported habitats for this tuberous rooted herbaceous perennial. To the north of San Diego County, grassy flats, north-facing slopes, and openings in pine woods are utilized.

Known Sites: There are no recent sightings for this inconspicuous species in San Diego County. Historical and possibly erroneous reports from Sweetwater, Mesa Grande, and Ramona have not been relocated. Roberts reports this species as collected in Orange County in 1932 near the Bolsa Chica Gun Club. Thomas reports this yumpah from Pebble Beach, Año Nuevo Point, Palo Alto, Big Basin, and Santa Cruz in the Santa Cruz region. Hoover reports it near Cambria for San Luis Obispo County; Bowerman reports it for the west fork of Emmons Canyon and also Dan Cook Canyon in the Mount Diablo area.

Status: The status of this species in San Diego County is unknown. Gairdner's Yumpah is possibly extirpated from the region. All populations in Southern California should be protected.

Copyright © May 1994 Craig H. Reiser.

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