Common name: Small Knotweed
Polygonum plebeium R.Br. APNI*
Synonyms: Polygonum plebium R.Br. APNI*
Description: Prostrate to decumbent herb, commonly mat-forming, stems to 15 cm long, often rooting at nodes.
Leaves linear-oblong to very narrow-elliptic, 3–20 mm long, 1–3.5 mm wide, apex acute, margins strongly recurved, surface minutely warty.
Perianth 1.2–2.5 mm long, divided for half to two-thirds of its length.
Achene with 3 subequal concave or flat faces, 0.8–1.5 mm long, 0.5–0.8 mm diam., dark brown to black, smooth and shining.
Distribution and occurrence: Widespread, especially in inland, drier districts of the whole of mainland Australia. Also in New Zealand, Malesia, SE Asia and Africa.
NSW subdivisions: NC, CC, CT, ST, NWS, CWS, SWS, NWP, SWP, NFWP, SFWP
Other Australian states: Qld Vic. S.A. N.T. W.A.
Text by K. L. Wilson (1990); edited KL Wilson (Oct 2018)
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.