Taxon Report

Juncus hemiendytus F.J. Herm. var. abjectus (F.J. Herm.) B. Ertter

Center Basin rush

Print Report

Taxon Summary

Juncus hemiendytus var. abjectus, commonly known as Center Basin rush, is a annual herb in the Juncaceae that is found in California and elsewhere. It occurs within Meadows and seeps, and Subalpine coniferous forest, growing at elevations from 1400 to 3400 meters. Juncus hemiendytus var. abjectus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Juncus hemiendytus F.J. Herm. var. abjectus (F.J. Herm.) B. Ertter
Common Name:	Center Basin rush
Family:	Juncaceae
Element Code:	PMJUN011F1
USDA Plants Symbol:	JUHEA
Synonyms/Other Names:	Juncus abjectus F.J. Herm.

Ecology and Life History


Lifeform:	annual herb
Blooming Period: May-Jun(Jul)	May-Jun(Jul)
Elevation:	1400-3400 (4595-11155)
General Habitats:	Meadows and seeps, Subalpine coniferous forest
Microhabitat:	Mesic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G5T5
State Rank:	S4
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

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)
Alpine (ALP), Fresno (FRE), Lassen (LAS), Modoc (MOD), Mono (MNO), Nevada (NEV), Placer (PLA), Plumas (PLU), Shasta (SHA), Sierra (SIE), Tulare (TUL), Tuolumne (TUO)
Quads: Name (Quad Code)
Antelope Mtn. (4012058), Beaver Mtn. (4112086), Boca (3912041), Bullard Lake (4012078), Champs Flat (4012068), Crank Mountain (4112142), Crocker Mtn. (3912084), Dog Valley (3912051), Donica Mtn. (4112132), Dunderberg Peak (3811913), Falls Ridge (3711984), Freel Peak (3811978), Harvey Mtn. (4012161), Hobart Mills (3912042), Johnson Peak (3611843), Knobcone Butte (4112151), Lake Annie (4112081), Letterbox Hill (4112018), Martis Peak (3912031), Mount Dana (3711982), Mount Whitney (3611853), Mt. Abbot (3711847), Mt. Williamson (3611863), Norden (3912033), Old Station (4012164), Pegleg Mtn. (4012048), Pikes Point (4012057), Pine Creek Valley (4012151), Portola (3912074), Sheepshead (4012077), Spalding Tract (4012067), Squaw Valley Peak (4012014), Swain Mountain (4012141), Tioga Pass (3711983), Topaz Lake (3811965), Vogelsang Peak (3711973)

Threat List Data from the CNDDB


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

Notes



Possibly threatened by grazing and trampling. Potentially threatened by hydrological alterations. On review list in ID and OR. See Memoirs of the New York Botanical Garden 39:72-78 (1986) for revised treatment.
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 17 July 2025].