Large-Leaf Knotweed
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Large-Leaf Knotweed
P Native Photo: Sunit Singh
Common name: Large-Leaf Knotweed, Red Knotweed • Nepali: मोन्जा Monza, Dalle ghans, Dalle jhar
Botanical name: Bistorta macrophylla    Family: Polygonaceae (Knotweed family)
Synonyms: Persicaria macrophylla, Polygonum macrophyllum

Large-Leaf Knotweed is a slender plant with stem simple arising from a woody root stock, with a rounded or oval at branch-ends cluster of pink or red flowers, usually about 1 cm long, borne on a slender erect, nearly leafless stem. Flowers are drooping, about 2 mrn. Leaves are oblong pointed to broadly linear, parallel-sided, up to 2 cm broad but often much narrower, blade 3-12 cm long, with a rounded base; lower leaves are long-stalked; stem mostly 5- 15 cm, but occasionally up to 30 cm. Large-Leaf Knotweed is found in the Himalayas, from Uttarakhand to SW China, at altitudes of 1700-4500 m. Flowering: June-August.

Identification credit: Sunit Singh, J.P Mehta Photographed in Madhmaheshwar, Uttarakhand.

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