Tiarella trifoliata var. trifoliata
Common Name: trifoliate laceflower
Family: Saxifragaceae
Element Code: PDSAX10031
Full Name: Tiarella trifoliata L. var. trifoliata

2014 Barry Rice
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
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 Extirpated
Notes Glossary
  • Move to List 2? Location, rarity, and endangerment information needed, especially quads for TRI Co. Possibly threatened by logging. Intergrades with var. unifoliata. See Madroño 18(5):152-160 (1966) for additional information.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1980-01-01
  • Last Update: 2012-08-17
Location Glossary
  • Elevation: 170 - 1500 meters
  • California Endemic: no
  • States: California, !AK, Idaho, !MT, Oregon, Washington
  • California Counties and Islands:   name (code)
    Humboldt (HUM),  Trinity (TRI)
  • Quads:   name (DWR code) USGS code
    Noyo Hill (568B) 39123D6,  Scotia (636A) 40124D1,  Board Camp Mtn. (652B) 40123F6,  Lord-ellis Summit (671A) 40123H7,  Blue Lake (671B) 40123H8,  Korbel (671C) 40123G8,  Maple Creek (671D) 40123G7,  Ah Pah Ridge (705B) 41123D8,  Johnsons (705D) 41123C7
  • 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.
Quad data is not available for all List 3 and 4 plants. For those that do contain this data, it has not been quality controlled and is potentially incomplete, inaccurate, and/or out of date. Please use caution when referencing this information. We are currently working hard to maintain this data and hope to provide accurate and up to date information in the near future.
Presumed Extant Presumed Extirpated or Unknown 1332
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed ].

39123D6=Noyo Hill (568B) 39123D6;40124D1=Scotia (636A) 40124D1;40123F6=Board Camp Mtn. (652B) 40123F6;40123H7=Lord-ellis Summit (671A) 40123H7;40123H8=Blue Lake (671B) 40123H8;40123G8=Korbel (671C) 40123G8;40123G7=Maple Creek (671D) 40123G7;41123D8=Ah Pah Ridge (705B) 41123D8;41123C7=Johnsons (705D) 41123C7