Juncus drummondii var. subtriflorus E. Mey. (E. Mey.) C.L. Hitchc.
Drummond's rush (threeflower rush)
Juncaceae (Rush family)
Introduction to Vascular Plants
Drummond's rush (threeflower rush)
Juncaceae (Rush family)
Introduction to Vascular Plants
Photograph
Map
Distribution of Juncus drummondii var. subtriflorus
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Species Information
General:
Perennial tufted herb from short rhizomes; stems wiry, erect, 15-40 cm tall.
Leaves:
Reduced to sheaths with short awns at the base of the stem, or the uppermost of the basal sheaths with blades less than 1 cm long.
Flowers:
Inflorescence a loose head with 1 to 4, nearly terminal flowers, appearing as if it is on the side of the stem; perianth segments green to brown, pointed, 5-7 mm long, the inner ones slightly shorter; stamens 6; anthers about 1.5 mm long, shorter than the filaments; involucral bract 1-3 cm long, cylindrical, resembling a continuation of the stem.
Fruits:
Capsules, cylindrical, notched, longer than the perianth segments; seeds spindle-shaped, 0.5 mm long with long, tail-like appendages at each end of the seed.
Notes:
Two varieties occur in W North America. Our BC material has been identified as var. drummondii but var. subtriflorus can be expected in S BC.
1. Capsules usually at least 1 mm longer than the perianth segments; perianth 5-6 mm long.................. var. subtriflorus (E. Mey.) C.L. Hitchc.
1. Capsules about equal to the perianth segments; perianth 6-7 mm long..................var. drummondii
Ecology
Ecological Framework for Juncus drummondii var. subtriflorus
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)
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) |
1962 | 1862 | 2062 |
| Slope
Gradient (%) |
7 | 7 | 8 |
|
Aspect (degrees) |
82 | 52 | 114 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
6 | 6 | 6 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
2 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
ESSF(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Mesic to moist rocky slopes, heaths, snowbed sites, streambanks, open forests and meadows in the subalpine and alpine zones; common throughout BC; N to YT and NT, E to AB and S to NM and NV.Status Information
Synonyms
Synonyms and Alternate Names:
Juncus drummondii var. logifructus H. St. John