Annual herb from a taproot; stems prostrate to erect, solitary, simple or branched, 30-100 cm tall.
Basal leaves lacking; stem leaves alternate, lanceolate, the blades 3-10 cm long, smooth to appressed hairy, usually with a purplish spot near midlength, the stalks short, thick; stipules cylindric-conic, 5-15 mm long, entire, appressed hairy, fringed with bristly hairs at the tips.
Inflorescence of many flowers in crowded, cylindric, compound racemes; perianths pink or purplish, rarely white, 1.5-3.5 mm long, 5-lobed nearly to the base.
Achenes, 3-angled or lens-shaped, 2-3 mm long, egg-shaped to roundish, nearly black, smooth, shiny.
Sometimes difficult to separate from P. hydropiperoides.
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Persicaria maculata (Raf.) S.F. Gray
Polygonum persicaria L.