Persicaria hydropiperoides (Michx.) Small
Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)
Polygonum hydropiperoides Michx.
Pertinent Common Names (particularly those used in California; go to GRIN for other common names)
Primary Disseminule Type
fruit (with or without attached perianth)
Description (diagnostics are in brown)
Disseminule is a fruit with or without attached, partially connate tepals (=perianth).
Perianth 5-lobed, pink with pink, white or greenish margins, sometimes obscurely glandular-punctate, 2.5–4 mm long, veins inconspicuous, apex obtuse to rounded.
Fruit an achene, broadly ovate with mucronate apex, cross-section trigonous, 1.5–3 mm long x 1–2.3 mm wide. Surface brown or brownish-black to purplish-black, shiny, uneven (minutely pitted).
Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)
AUQP, NZBORIC, NZBPI