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

Introduction to Vascular Plants

Photograph

© Jamie Fenneman     (Photo ID #46926)


Map

E-Flora BC Static Map

Distribution of Juncus longistylis
Click here to view the full interactive map and legend

Species Information

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.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

USDA Species Characteristics

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

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

Avg

Min

Max

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
# 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)

Habitat and 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.

SourceThe Illustrated Flora of British Columbia