*The database used to provide updates to the Online Inventory is under construction. View updates and changes made since May 2019 here.
Perideridia gairdneri ssp. gairdneri
Common Name: Gairdner's yampah
Family: Apiaceae
Element Code: PDAPI1N062
Full Name: Perideridia gairdneri (H. & A.) Math. ssp. gairdneri

2007 Neal Kramer
Biology Glossary
  • Lifeform: perennial herb
  • Blooming Period: Jun-Oct
  • Habitat: vernally mesic.
    • Broadleafed upland forest
    • Chaparral
    • Coastal prairie
    • Valley and foothill grassland
    • Vernal pools
Rarity Status Glossary
Occurrence Data from CDFW
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences:
  • Element Occurrence Ranks:
    A B C D X U
  • Population Status:
    >20 yrs
    <=20 yrs
  • Presence:
    Present Extant Possibly Extirpated Presumed Extirpated
Notes Glossary
  • Endangered in the southern portion of its range; status of occurrences uncertain. Can be relatively common locally, especially in northern counties. Is plant extant in SMT Co.? Threatened by agriculture, grazing, non-native plants, habitat alteration, and urbanization. See University of California Publications in Botany 55:1-74 (1969) for taxonomic treatment.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1974-01-01
  • Last Update: 2018-03-01
Location Glossary
  • Elevation: 0 - 610 meters
  • California Endemic: yes
  • Other States:
  • California Counties and Islands:   name (code)
    Contra Costa (CCA),  Kern (KRN),  Los Angeles (LAX) *,  Mendocino (MEN),  Monterey (MNT),  Marin (MRN),  Napa (NAP),  Orange (ORA) *,  San Benito (SBT),  Santa Clara (SCL),  Santa Cruz (SCR),  San Diego (SDG) *,  San Luis Obispo (SLO),  San Mateo (SMT) (*?),  Solano (SOL),  Sonoma (SON)
  • Quads:   name (DWR code) USGS code
    Bear Mountain (213B) 3511826,  Cape San Martin (296B) 3512184,  Burro Mountain (296D) 3512173,  Mt. Carmel (344A) 3612147,  San Rafael (467A) 3712285,  Tomales (485B) 3812228,  Drakes Bay (485C) 3812218,  Elmira (498C) 3812138,  Two Rock (502D) 3812237,  Healdsburg (518D) 3812257,  Plantation (520D) 3812353,  Point Arena (537B) 3812386,  Purdys Gardens (550D) 3912311,  Willits (567A) 3912343,  Hiouchi (740D) 4112471
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable. This data should NOT be substituted for pre-project review or for on-site surveys.
Includes unprocessed quads for CRPR 3 and 4 plants; unprocessed location data has not been quality controlled and may contain errors.
Presumed Extant Presumed Extirpated or Unknown 1316
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website http://www.rareplants.cnps.org [accessed ].

3511826=Bear Mountain (213B) 3511826;3512184=Cape San Martin (296B) 3512184;3512173=Burro Mountain (296D) 3512173;3612147=Mt. Carmel (344A) 3612147;3712285=San Rafael (467A) 3712285;3812228=Tomales (485B) 3812228;3812218=Drakes Bay (485C) 3812218;3812138=Elmira (498C) 3812138;3812237=Two Rock (502D) 3812237;3812257=Healdsburg (518D) 3812257;3812353=Plantation (520D) 3812353;3812386=Point Arena (537B) 3812386;3912311=Purdys Gardens (550D) 3912311;3912343=Willits (567A) 3912343;4112471=Hiouchi (740D) 4112471