Taxon Report

Bryum chryseum Mitt.

brassy bryum

Print Report

Taxon Summary

Bryum chryseum, commonly known as brassy bryum, is a moss in the Bryaceae that is found in California and elsewhere. It occurs within Chaparral (openings), Cismontane woodland, and Valley and foothill grassland, growing at elevations from 50 to 600 meters. Bryum chryseum is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Bryum chryseum Mitt.
Common Name:	brassy bryum
Family:	Bryaceae
Element Code:	NBMUS1A430
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	moss
Blooming Period:
Elevation:	50-600 (165-1970)
General Habitats:	Chaparral, Cismontane woodland, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G5
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 4.3 on 2014-05-05

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Amador (AMA), Butte (BUT), Fresno (FRE), Madera (MAD), Mendocino (MEN), San Bernardino (SBD)
Quads: Name (Quad Code)
Hopland (3812381), Irish Hill (3812048), Ivanpah Lake (3511554), Millerton Lake East (3711915), Millerton Lake West (3711916), Shippee (3912156)

Threat List Data from the CNDDB


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

Notes



Similar to B. argenteum. See Journal of the Linnean Society 12:304 (1869) for original description, and Evansia 26(3):98-101 (2009) for information on discovery in CA.
Threats:

Taxonomy:

Selected References

Proposed Addition to CRPR 4.3, G5 / S3 (2014)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].