Taxon Report

Triquetrella californica (Lesq.) Grout

coastal triquetrella

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Taxon Summary

Triquetrella californica, commonly known as coastal triquetrella, is a moss in the Pottiaceae that is found in California and elsewhere. It occurs within Coastal bluff scrub, and Coastal scrub, growing at elevations from 10 to 100 meters. Triquetrella californica is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification
Scientific Name:
 Triquetrella californica (Lesq.) Grout
Common Name:
 coastal triquetrella
Family: Pottiaceae
Element Code: NBMUS7S010
USDA Plants Symbol: TRCA25
Synonyms/Other Names:

Ecology and Life History
Lifeform: moss
Blooming Period:
Elevation: 10-100 (35-330)
General Habitats: Coastal bluff scrub, Coastal scrub
Microhabitat:
Microhabitat Details: soil

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G2
State Rank:
 S2
State List: None
Fed List: None
Other Status: USFS_S
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 13
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 13

Location
California Endemic:  False
California Counties and Islands: Name (Code)
Contra Costa (CCA), Del Norte (DNT), Marin (MRN), Mendocino (MEN), San Diego (SDG), San Francisco (SFO), San Mateo (SMT), Sonoma (SON)
Quads: Name (Quad Code)
Bodega Head (3812331), Clayton (3712188), Diablo (3712178), Fort Bragg (3912347), Inglenook (3912357), Inverness (3812217), Montara Mountain (3712254), Requa (4112451), San Francisco North (3712274), San Francisco South (3712264), San Quentin (3712284), San Vicente Reservoir (3211688), Santa Rosa (3812246), Valley Ford (3812238)

Threat List Data from the CNDDB

Threat List Total: 0
EOs with Threat Listed: Total EOs % of EOs
0 %

 

Notes
Known in CA from fewer than ten small coastal occurrences, and in in OR from only one occurrence. Threatened by urbanization. See Mem. Calif. Acad. 1:30 (1868) for original description, and Moss. Fl. N.A. 3:201 (1934) for revised nomenclature.
Threats:
Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 January 2025].