Taxon Report

Texosporium sancti-jacobi (Tuck.) Nádv. ex Tibell & Hofsten

woven-spored lichen

Print Report

Taxon Summary

Texosporium sancti-jacobi, commonly known as woven-spored lichen, is a crustose lichen (terricolous) in the Caliciaceae that is found in California and elsewhere. It occurs within Chaparral, growing at elevations from 60 to 660 meters. Texosporium sancti-jacobi is ranked 3, Plants About Which We Need More Information, A Review List.

Classification


Scientific Name:	Texosporium sancti-jacobi (Tuck.) Nádv. ex Tibell & Hofsten
Common Name:	woven-spored lichen
Family:	Caliciaceae
Element Code:	NLTEST7980
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	crustose lichen (terricolous)
Blooming Period:
Elevation:	60-660 (195-2165)
General Habitats:	Chaparral
Microhabitat:
Microhabitat Details:	On soil, small mammal pellets, dead twigs, and on Selaginella spp

Conservation Status


CA Rare Plant Rank:	3
Global Rank:	G3
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 3 on 2014-03-01

Occurrence Data from the CNDDB


Total Occurrences:	19
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	1
Poor (D)	0
None (X)	3
Unknown (U)	15

Location


California Endemic: False
California Counties and Islands: Name (Code)
Los Angeles (LAX), Riverside (RIV), San Benito (SBT), San Diego (SDG), San Luis Obispo (SLO), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Bachelor Mtn. (3311751), Camarillo (3411921), Camatta Ranch (3512043), Del Mar (3211782), La Jolla (3211772), La Mesa (3211771), Lompoc (3412064), North Chalone Peak (3612142), Peak Mountain (3411987), Sage (3311658), San Clemente Island South (3211873), Steele Peak (3311773)

Threat List Data from the CNDDB


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

Notes



Added to CRPR 3 based on prior inclusion in CNDDB; CALS Conservation Committee sponsorship is pending. Possibly extirpated in Del Mar from urbanization.
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 2 April 2025].