Family: Polygonaceae
Polygonum patulum
Citation:
M. Bieb., Fl. Taur.-Caucas. 1:304 (1808).
Synonymy: Not Applicable Common name: Tree hogweed, knotweed.
Description:
Glabrous annual; stems erect to 60 cm high or more, branched, slender, stiff, ribbed, striate; leaves often deciduous, shortly petiolate or subsessile, narrowly elliptic to linear-lanceolate, acute, 1-3 x 0.3-1.5 cm, with a prominent midrib beneath, yellowish-green; stipular sheath to 1.5 cm long, much shorter than the elongated internodes, cleft or torn, sometimes 2-partite, 6-8-nerved, hyaline, basal part brownish.
Flowers loosely scattered along the leafless parts of the stems, 1-3 in the axil of each bract, or somewhat denser and raceme-like, fragrant; pedicels 2-3.5 mm long; perianth-segments pink-green; style short, 3-partite.
Nut 2-3 mm long, included in the persistent perianth, ovoid, trigonous, apiculate, minutely punctate, shining, dark-brown.
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Image source: fig. 98e in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).
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Distribution:
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naturalised in Vic. and S. Aust. Native to Europe and Asia.
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Conservation status:
naturalised
Flowering time: Nov. — April.
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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
Author:
Not yet available
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