Plants of South Eastern New South Wales
Rumex conglomeratus
Clustered dock
Polygonaceae
Pastures, disturbed sites, and moist areas, often near swamps or streams, or in seasonally wet ditches. Widespread. Most common in the Sydney area and Blue Mountains.
Introduced perennial herb to about 1 m high. Leaves basal and alternating up the stems, 4–12 cm long, 10–40 mm wide,with a sheath at the base of the stalk, bases sometimes shallowly cordate; margins flat or finely wavy. Upper leaves smaller. Flowers small, with 6 'petals', in many-flowered whorls separated from each other by about 1–3 cm, all but the uppermost subtended by a small leaf. Seed cases 2–3.2 mm long, 1–2.5 mm wide, with a large boss covering most of the seed case surface. Flowers Sep.–Jan.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Rumex~conglomeratus (accessed 5 February, 2021)
This identification key and fact sheets are available as a free mobile application: