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Juncus dubius

Juncus dubius Engelm.

Dubius Rush, Mariposa Rush, Little Bamboo

Juncaceae (Rush Family)

Synonym(s):

USDA Symbol: judu

USDA Native Status: L48 (N)

Creeping rootstocks send up rather close, single, erect, stout stems 1 1/2-3 ft. tall. Grass-like leaves are dark green. The seed head is widely branched with light greenish-brown spikelets.

A member of the family Juncaceae which includes herbs, rarely shrubs, with mostly grass-like leaves, usually in a basal tuft, and small greenish or brownish flower in dense spikes or heads or sometimes in loose clusters or even solitary.

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Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Fruit Type: Capsule
Size Notes: Up to about 3 feet tall.

Bloom Information

Bloom Color: Yellow , Brown
Bloom Time: May , Jun , Jul , Aug , Sep , Oct

Distribution

USA: CA , ID , NV
Native Distribution: Through CA Coast Ranges to OR
Native Habitat: Wet places

Growing Conditions

Light Requirement: Sun
Soil Moisture: Wet
Soil Description: Wet soils.

Propagation

Commercially Avail: yes

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:			FACW							FACW

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Juncus dubius in USDA Plants
FNA: Find Juncus dubius in the Flora of North America (if available)
Google: Search Google for Juncus dubius

Metadata

Record Modified: 2023-01-10
Research By: TWC Staff

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