Plants of South Eastern New South Wales
Persicaria subsessilis
Common name
Bristly knotweed, Hairy Knotweed
Family
Polygonaceae
Where found
Forest, along streams, and in open swamps. Coast and ranges.
Notes
Perennial herb to about 1 m high or sprawling, rhizomatous. Stems sparsely to densely covered with coarse appressed hairs. Leaves alternating along the stems, 6–15 cm long, 5–23 mm wide, sparsely to densely covered in coarse hairs, stipular sheath (ocrea) hairy, with fringing hairs 4–10 mm long. Flowers with 4-5 white to pale pink 'petals', each 2.2–4 mm long, free from each other from half to two-thirds their length. Spikes cylindrical, dense to rather loose, 2–8 cm long, 4–10 mm in diameter.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Persicaria~subsessilis (accessed 30 January, 2021)
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