Family: Polygonaceae
Polygonum aviculare
Citation:
L., Sp. Pl. 1:362 (1753).
Synonymy: Not Applicable Common name: Wireweed, hogweed, (prostrate) knotweed.
Description:
Glabrous annual, with long stiff wiry stems, prostrate on open ground, to c. 1 m long; leaves oblong-lanceolate, 1-4 cm long, 0.1-0.8 cm wide, with lateral nerves conspicuous on the undersurface; stipules long, lacerate, silvery.
Flowers white or pink, in axillary clusters of 1-4.
Nut trigonous, reddish-black, dull, minutely granular, c. 2.5 mm long.
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Image source: fig. 98a in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).
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Published illustration:
Cunningham et al. (1982) Plants of western New South Wales, p. 231.
Distribution:
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S.Aust.: LE, GT, FR, EA, EP, NL, MU, YP, SL, KI, SE. All mainland States. Native to Europe; naturalised widely, including New Zealand.
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Conservation status:
naturalised
Flowering time: Nov. — May.
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SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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Biology:
No text
Taxonomic notes:
As defined here, this species probably includes several entities which should be recognised, including for example P. arenastrum Jordon ex Boreau, which has been recorded in all other States except N.T. and Qld.
Author:
Not yet available
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