Taxon Report

Trichodon cylindricus (Hedw.) Schimp.

cylindrical trichodon

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Taxon Summary

Trichodon cylindricus, commonly known as cylindrical trichodon, is a moss in the Ditrichaceae that is found in California and elsewhere. It occurs within Broadleafed upland forest, Meadows and seeps, and Upper montane coniferous forest, growing at elevations from 50 to 2002 meters. Trichodon cylindricus is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Trichodon cylindricus (Hedw.) Schimp.
Common Name:	cylindrical trichodon
Family:	Ditrichaceae
Element Code:	NBMUS7N020
USDA Plants Symbol:	TRCY6
Synonyms/Other Names:

Ecology and Life History


Lifeform:	moss
Blooming Period:
Elevation:	50-2002 (165-6570)
General Habitats:	Broadleafed upland forest, Meadows and seeps, Upper montane coniferous forest
Microhabitat:	Roadsides, Sandy
Microhabitat Details:	exposed soil

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4G5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	14
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	3
Fair (C)	0
Poor (D)	1
None (X)	0
Unknown (U)	10

Location


California Endemic: False
California Counties and Islands: Name (Code)
Humboldt (HUM), Lake (LAK), Mendocino (MEN), Plumas (PLU), Sierra (SIE), Siskiyou (SIS), Tulare (TUL)
Quads: Name (Quad Code)
Arcata North (4012481), Blairsden (3912075), Grizzly Valley (3912085), Hull Mountain (3912258), Kettle Rock (4012026), La Porte (3912068), Lodgepole (3611856), Mt. Ingalls (3912086), Rodgers Peak (4112421), Sanhedrin Mtn. (3912351), Seven Lakes Basin (4112224), Trinidad (4112412), Van Arsdale Reservoir (3912341)

Threat List Data from the CNDDB


Threat List Total:	3
EOs with Threat Listed:	Total EOs	% of EOs
	5	36 %
Logging	4	28%
Road/trail construction/maint.	3	21%
Other	1	7%

Notes



Threatened by logging, road maintenance. See Spec. Musc. p. 107 (1801) for original description, and Corroll p. 36 (1856) 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 27 January 2025].