E-Flora BC: Electronic Atlas of the Flora of British Columbia

Juncus longistylis Torr.
long-styled rush (longstyle rush)
Juncaceae (Rush family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #46926)

E-Flora BC Static Map
Distribution of Juncus longistylis
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Species Information

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General:
Perennial herb from long creeping rhizomes; stems slightly compressed, 20-60 cm long.
Leaves:
Mostly basal but 1 to 3 from the lower parts of the stem, flat, soft, 1.5-3 mm wide, 10-30 cm long, lacking cross-walls.
Flowers:
Inflorescence of 1 to 5 heads at the top of the stem, each of them with 3 to 10 flowers, the flowers lacking involucral bractlets; perianth segments pale brown with green midribs, largely translucent-margined, 5-6 mm long, lanceolate, the outer segments slightly shorter than the inner ones; stamens 6, anthers 1.2-2 mm long, longer than the filaments; involucral bract shorter than the inflorescence.
Fruits:
Capsules, cylindrical to egg-shaped, notched, shorter than the perianth; seeds lopsided egg-shaped, 0.4-0.6 mm long, tail-like appendages lacking.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Early Summer
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA

Habitat / Range

Marshes and fens in the steppe and montane zones; infrequent in BC east of the Coast Cascade Mountains; E to NF and S to MI, MN, NE, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Juncus longistylis

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 1700 1700 1700
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 7
Modal Nutrient Regime
Class
D
Number of field plots
 species was recorded in:
1
Modal BEC Zone Class
ESSF
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References