Potamogeton foliosus Raf.
closed-leaved pondweed (leafy pondweed)
Potamogetonaceae (Horned pondweed family)
Introduction to Vascular Plants
closed-leaved pondweed (leafy pondweed)
Potamogetonaceae (Horned pondweed family)
Introduction to Vascular Plants
Photograph
Species Information
General:
Perennial, aquatic herb from fine, tufted roots; stems up to 100 cm long, extensively branched.
Leaves:
All submersed, linear, the sides parallel, thin, green, 1-9 cm long, 0.3-2.5 mm wide, usually with 3 veins, unstalked, the tips pointed, the stipules 0.5-1 cm long, delicate, not fibrous, greenish or brownish, the margins fused towards the bases, the veins evident as ridges running the entire length, the glands either lacking or poorly developed.
Flowers:
Inflorescence spikelike, the spikes 0.5-1.5 cm long, with 2 to 5 whorls of flowers, the stalks thin; bases of winter buds soft, smooth.
Fruits:
Achenes, egg-shaped, 1.5-2.5 mm long, 1.2-2 mm wide, widest in the middle, the beaks short stubby, the keels strongly developed, winged.
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
Ecological Framework for Potamogeton foliosus
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) |
611 | 60 | 1147 |
| Slope
Gradient (%) |
0 | 0 | 0 |
|
Aspect (degrees) |
0 | ||
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
7 | 5 | 8 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
15 | ||
| Modal
BEC Zone Class |
SBS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
CWH(2), IDF(1), SBS(12) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Lakes, ponds and ditches in the lowland, steppe and montane zones; frequent in BC south of 55 degrees N, rare in N BC, N to AK and YT, E to NF and S to ME, MA, PA, NC, FL, MS, LA, TX, NM, AZ and CA; Mexico.Status Information
Synonyms
Synonyms and Alternate Names:
Potamogeton foliosus var. foliosus Raf. [superfluous autonym]