Taxon Report

Coscinodon arctolimnius (Steere) Steere ssp. higuchii Hastings & Deguchi

Higuchi's sieve-tooth moss

Print Report

Taxon Summary

Coscinodon arctolimnius ssp. higuchii, commonly known as Higuchi's sieve-tooth moss, is a moss in the Grimmiaceae that is found only in California. It occurs within Alpine boulder and rock field, growing at elevations from 2935 to 2935 meters. Coscinodon arctolimnius ssp. higuchii is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Coscinodon arctolimnius (Steere) Steere ssp. higuchii Hastings & Deguchi
Common Name:	Higuchi's sieve-tooth moss
Family:	Grimmiaceae
Element Code:	NBMUS96032
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	moss
Blooming Period:
Elevation:	2935-2935 (9630-9630)
General Habitats:	Alpine boulder and rock field
Microhabitat:	Dry (usually), Rocky
Microhabitat Details:	usually exposed

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	GUTU
State Rank:	S1S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 4.2 on 2014-05-13

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)
Tuolumne (TUO)
Quads: Name (Quad Code)
Tower Peak (3811925)

Threat List Data from the CNDDB


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

Notes



Discovered in CA by M. Hutten in 2011; known only from near Snow Lake in the Emigrant Wilderness. See The Bryologist 100(1):50-55 (1997) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2014-05-13

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 November 2025].