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Polygonum lapathifoliumL. - Dock-leaved Smartweed
Scientific Description:
Tall annual. Stems ascending to erect, branched. Ochreae brownish, entire. Leaves lanceolate to very narrowly elliptic, cuneate at the base, often with a blackish spot, usually glabrous, and always with pellucid, yellowish glands beneath. Inflorescence a dense, stout, oblong spike. Peduncles with subsessile yellow glands. Flowers usually pink. Perianth c. 2 mm. Nut dark brown and glossy, included in the perianth.
Flowering time: August−September.
Habitat: Marshes and near streams, s.l.−1500 m.
Reference:
Coode MJE & Cullen J (1967). Polygonum lapathifolium L., In: Davis PH (ed.), Flora of Turkey and the East Aegean Islands, Edinburgh University Press, Edinburgh, 2: 273.
Public Description:
Polygonum lapathifolium, commonly known as “Dock-leaved Smartweed”, “Pale Smartweed” or “Willow Weed”, grows naturally in Europe, Asia, Africa and America. It is a tall annual herb with pink flowers. It blooms between August and September and is found in marshes and near streams. The leaves provide protection for wildlife and their seeds are an important source of food for many waterfowl, songbirds, and mammals. Despite being a desirable plant in natural areas, it can also invade agricultural areas and other disturbed areas. On the other hand, because of its aquatic nature, it can reduce the flow of water in irrigation ditches, canals, and drainage areas.
References:
Anonymous 1 (2016). https://en.wikipedia.org/wiki/Persicaria_lapathifolia/,Accessed date: 04.04.2016.
Anonymous 2 (2016). http://www.ipm.ucdavis.edu/PMG/WEEDS/pale_smartweed.html / Accessed date: 04.04.2016.
Anonymous 3 (2016). https://gobotany.newenglandwild.org/search/?q=polygonum+lapathifolium / Accessed date: 04.04.2016
Keskin M (2012). Polygonum L., In: Güner, A., Aslan, S., Ekim, T., Vural, M. & Babaç, M.T. (eds.), Türkiye Bitkileri Listesi (Damarlı Bitkiler). Nezahat Gökyiğit Botanik Bahçesi ve Flora Araştırmaları Derneği Yayını. İstanbul, pp. 758–761.