CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record tiarella_trifoliata_var._trifoliata - Fri, Dec. 3, 2021, 05:56 ET b
Tiarella trifoliata var. trifoliata
common nametrifoliate laceflower
CalPhotos image
more photos
© 2009 Barry Breckling  Follow image link for photo data.
life form rhizomatous herb
CA Rare Plant Rank
List 3.2
LIST 3: We need more information about this plant (Review List).
     0.2: Fairly endangered in California
state rank
S2S3   S2S3: Intermediate between S2 and S3
global rank
G5T5      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (9):
Noyo Hill (568B) 3912346, Scotia (636A) 4012441, Board Camp Mountain (652B) 4012366, Lord-ellis Summit (671A) 4012387, Blue Lake (671B) 4012388, Korbel (671C) 4012378, Maple Creek (671D) 4012377, Ah Pah Ridge (705B) 4112348, Johnsons (705D) 4112337
quad data info

Counties, states, regions:
Humboldt (HUM), Trinity (TRI), Alaska (AK), Idaho (ID), Montana (MT), Oregon (OR), Washington (WA)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Lower montane coniferous forest (LCFrs)
•North Coast coniferous forest (NCFrs)/edges, moist shady banks, streambanks
blooming period (May),Jun-Aug   Months in parentheses are uncommon.
elevation range170 - 1500 meters
Move to CRPR 2B? Location, rarity, and endangerment information needed, especially quads for TRI Co. Possibly threatened by logging, road maintenance, and recreational activities. Intergrades with var. unifoliata. See Madroņo 18(5):152-160 (1966) for additional information.
full nameTiarella trifoliata L. var. trifoliata
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  TITRT Element Code  PDSAX10031
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Fri, Dec. 3, 2021 from

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