Common name: Water Pepper
Persicaria hydropiper (L.) Delarbre APNI*
Synonyms: Polygonum hydropiper L. APNI*
Persicaria hydropiper f. ciliare Domin APNI*
Persicaria gracile R.Br. APNI*
Description: Erect or ascending herb 50–120 cm high, ± glabrous.
Leaves narrow-ovate, 5–12 cm long, 10–25 mm wide, minutely glandular, pubescent on veins and margins; petiole 1–5 mm long; ocrea with upper margin mostly with cilia 3–5 mm long.
Spikes elongate-cylindrical, slender, lax, 3–9 cm long, 3–5 mm diam., with each flower cluster distinct, with only 1 mature flower per cluster at a time. Perianth segments 2.3–3.8 mm long.
Achene lenticular, 2.0–2.2 mm long, 1.5–1.8 mm diam., dark brown to black.
Distribution and occurrence: Common in damp places. Possibly introduced.
NSW subdivisions: NC, CC, SC, NT, CT, ST, NWS, CWS, SWS, NWP, SWP
Other Australian states: Qld Vic. W.A.
Text by K. L. Wilson
Taxon concept: Flora of NSW 1 (1990)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.