Persicaria maculosa Gray

Family: Polygonaceae

Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)

Polygonum persicaria L.

Pertinent Common Names (particularly those used in California; go to GRIN for other common names)

spotted ladysthumb

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 4–5-lobed, greenish-white and often with rose-pink margins, 2–3.5 mm long, strongly veined in fruit (but NOT forked on outer lobes and curved outward at tips), typically open at maturity.

Fruit an achene, broadly ovate with mucronate apex, biconvex to slightly biconcave or ± trigonous with rounded margins, (1.9)2–2.7 mm long x 1.5–2.2 mm wide x variably thick. Surface blackish-brown to black, shiny, uneven (minutely pitted).

Similar Species

Similar Species Comparison Chart

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)