E-Flora BC: Electronic Atlas of the Flora of British Columbia

Persicaria hydropiper (L.) Opiz
marshpepper smartweed
Polygonaceae (Buckwheat family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #19719)

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Distribution of Persicaria hydropiper
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SUBTAXA PRESENT IN BC
Persicaria hydropiperoides

Introduction

Marshpepper smartweed is an introduced Eurasian species that is found in the southwestern and south-central part of the province.

Species Information

Click on the image below to view an expanded illustration for this species.

PDPGN0L160
PDPGN0L170


General:
Annual (occasionally perennial) herb from fibrous root; stems ascending to erect, several, simple to branched, tending to root at the nodes, more or less finely pitted or gland-dotted, peppery-tasting, 20-100 cm tall.
Leaves:
Basal leaves lacking; stem leaves alternate, lanceolate or elliptic-lanceolate, sparsely hairy to smooth, the blades 3-7 cm long, somewhat reduced upward, the stalks short; stipules oblique, up to 15 mm long, usually sparsely hairy and fringed with bristly hairs at the top.
Flowers:
Inflorescence of axillary and terminal, spikelike, scarcely interrupted, drooping racemes, 2-7 cm long; perianths 2.5-4 mm long, glandular-dotted, greenish with white (pink) margins, usually 4-lobed about 2/3 the distance to the base; stamens usually six.
Fruits:
Achenes, lens-shaped or 3-angled, brown, finely glandular-dotted, dull, 2.5-3 mm long.
Notes:
Closely related to P. punctatum.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist ditches, shorelines and disturbed sites; common in SW, infrequent in SC BC; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Persicaria hydropiper

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

Minimum

Average

Maximum

Elevation (metres) 580 937 1125
Slope Gradient (%) 0 5 30
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
236 235 236
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 6 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
6
Modal BEC Zone Class
ICH
All BEC Zones (# of stations/zone) species was recorded in: ICH(4), IDF(1), SBPS(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Polygonum hydropiper L.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References