marsh arrrow-grass
Juncaginaceae (Arrow-grass family)
Introduction to Vascular Plants
Species Information
General:
Aquatic perennial herb from a rhizome; stems 15-60 cm tall.
Leaves:
All basal, tufted, linear, 10-30 (40) cm long, 0.5-2 mm wide, flat; ligules usually 2-lobed, 0.5-1.5 mm long.
Flowers:
Inflorescence elongated and leafless, usually longer than the leaves with many, short-stalked flowers; perianth parts usually 6, 1.5-2 mm long; stamens usually 6; fertile ovaries 3.
Fruits:
Dry, linear to slenderly club-shaped, 6-7 (9) mm long, splitting into 3 carpels at maturity; seeds 1 per carpel, more or less angled.
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.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
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) |
863 | 0 | 1581 |
| Slope
Gradient (%) |
1 | 0 | 25 |
|
Aspect (degrees) |
241 | 30 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
6 | 3 | 8 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
47 | ||
| Modal
BEC Zone Class |
BWBS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BWBS(13), CWH(2), ICH(4), IDF(10), MS(1), SBPS(3), SBS(9), SWB(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Tidal marshes, saline and alkaline ponds, wet meadows and fens in the lowland, steppe and montane zones; common in BC east of the Coast-Cascade Mountains and S of 55degreeN, less frequent northward and along the coast; cosmopolitan, N to AK, YT and NT, E to NF and S to ME, NY, OH, IA, NE, NM, UT, NV and CA; Greenland, Eurasia, S America.Status Information
Synonyms
Synonyms and Alternate Names:
Triglochin palustre L. [orthographic variant]
Taxonomic Keys
1. Fertile ovaries 3; fruits linear to slenderly club-shaped.................Triglochin palustris
1. Fertile ovaries 6, fruits oblong to egg-shaped 2. Ligules entire or nearly so, (1) 1.5-5 mm long; leaf blades somewhat compressed; plants (10) 30-100 (120) cm tall...........................Triglochin maritima 2. Ligules 2-lobed, 0.5-1 mm long; leaf blades more or less cylindric; plants 5-15 (30) cem tall.....................Triglochin concinna Source: The Illustrated Flora of British Columbia |