Tiny Knotweed
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Tiny Knotweed
ative Photo: Krishan Lal
Common name: Tiny Knotweed
Botanical name: Bistorta perpusilla    Family: Polygonaceae (Knotweed family)
Synonyms: Polygonum perpusillum

Tiny Knotweed is a dwarf hairless perennial herb with a stout root-stock, covered with membranous stipules. Leaves arising from the root are nearly stalkless, narrowly linear, up to 2 cm long, stipules bifid. Flowering stem is 1-4 cm long, flowers white or pink, in pendulous heads. Tepals are 4, unequal, inner circular or oblong. Stamens are 1-3, trigonous or biconvex, pale, smooth.Tiny Knotweed is found in the Himalayas, from Garhwal to Bhutan, at altitudes of 4100-5000 m.

Identification credit: Krishan Lal
Photographed at Rohtang Pass, Himachal Pradesh.
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