Potamogeton epihydrus Raf.
ribbon-leaf pondweed (ribbonleaf pondweed)
Potamogetonaceae (Horned pondweed family)
Introduction to Vascular Plants
ribbon-leaf pondweed (ribbonleaf pondweed)
Potamogetonaceae (Horned pondweed family)
Introduction to Vascular Plants
Species Information
General:
Perennial, aquatic or semi-terrestrial herb from strong rhizomes; stems up to 100 cm long, flattened, compressed, usually not branched.
Leaves:
Submersed leaves ribbon-like, thin, the sides parallel, whitish-green, 1-20 cm long, 3-7 mm wide, unstalked, the tips pointed, with broad translucent bands along the midveins (totalling about 1/3 of the leaf width) and with 3 to 13 veins, the stipules 0.5-3 cm long, inconspicuous; floating leaves 1-7 cm long, 0.5-2 cm wide, leathery, long-stalked, lanceolate to elliptic, the tips pointed, tapering at the bases.
Flowers:
Inflorescence spikelike, the spikes 2-4 cm long, with 5 to 12 whorls of flowers, the stalks thin.
Fruits:
Achenes, almost globe-shaped, 2.5-4.5 mm long, 2-3 mm wide, flattened, beakless, the keels pronounced, 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
USDA Species Characteristics
Flower Colour:
Green
Blooming Period:
Mid Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Summer to Fall
Source: The USDA
Ecology
Ecological Framework for Potamogeton epihydrus
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) |
853 | 853 | 853 |
| Slope
Gradient (%) |
0 | 0 | 0 |
|
Aspect (degrees) |
0 | ||
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
8 | 8 | 8 |
| Modal
Nutrient Regime
Class |
|||
| #
of field plots species was recorded in: |
2 | ||
| Modal
BEC Zone Class |
SBPS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
SBPS(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Peaty lakes, ditches and ponds from the lowland and steppe to subalpine zones; common in coastal BC, infrequent E of the Coast-Cascade Mountains; N to AK, disjunct E from SK to NF and S to ME, PA, NC, GA, AL, MS, LA, SD, CO, UT, NV and CA; in Europe only at Outer Hebrides.Status Information
Synonyms
Synonyms and Alternate Names:
Potamogeton epihydrus subsp. nuttallii (Cham. & Schltdl.) Calder & Roy L. Taylor
Potamogeton epihydrus var. nuttallii (Cham. & Schltdl.) Fernald
Potamogeton epihydrus var. ramosus (Peck) House
Potamogeton nuttallii