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General: Annual herb from a taproot; stems prostrate to erect, solitary, simple or branched, 30-100 cm tall.
Leaves: 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.
Flowers: 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.
Fruits: Achenes, 3-angled or lens-shaped, 2-3 mm long, egg-shaped to roundish, nearly black, smooth, shiny.
Notes: Sometimes difficult to separate from P. hydropiperoides.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2017. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
20/07/2019 8:53:10 AM
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