Taxon Report

Triteleia grandiflora Lindl.

large-flowered triteleia

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Taxon Summary

Triteleia grandiflora, commonly known as large-flowered triteleia, is a perennial bulbiferous herb in the Themidaceae that is found in California and elsewhere. It occurs within Great Basin scrub, and Pinyon and juniper woodland, growing at elevations from 700 to 1500 meters. Triteleia grandiflora is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Triteleia grandiflora Lindl.
Common Name:	large-flowered triteleia
Family:	Themidaceae
Element Code:	PMLIL21060
USDA Plants Symbol:	TRGR7
Synonyms/Other Names:	Triteleia grandiflora var. howellii

Ecology and Life History


Lifeform:	perennial bulbiferous herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	700-1500 (2295-4920)
General Habitats:	Great Basin scrub, Pinyon and juniper woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.1
Global Rank:	G4G5
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.1 to 2B.1 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	3

Location


California Endemic: False
California Counties and Islands: Name (Code)
Modoc (MOD), Siskiyou (SIS)
Quads: Name (Quad Code)
Big Swamp (4112121), Hornbrook (4112285), Rimrock Lake (4112162), Solomons Temple (4112263)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	2	50 %
Grazing	2	50%
Other	1	25%

Notes



Threatened by pipeline construction. Possibly threatened by grazing. See Proceedings of the American Academy of Arts and Sciences 14:301 (1879) for original description, and American Midland Naturalist 25:80 (1941) for revised nomenclature.
Threats:

Taxonomy:

Selected References

USFS Potential Species of Conservation Concern Profile

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 12 February 2025].