Sikkim Knotweed is an erect, 2-3 m tall, softly
hairy, branched, perennial herb or undershrub. Stem is often
dichotomously branched, round, hairy, rarely hairless. Leaves are 7-18
cm long, 3.0-6.0 cm wide, elliptic-lanceolate, velvety above, hairy
below. Ochrea are ovate, tubular up to 5 cm long, membranous. Flowers
are borne in a large, richly branched, thyrsoid, velvety panicle, at
branch ends. Flowers are 3-3 mm across. Tepals are 5, creamy white,
1.5-3.0 x 0.5-1.2 mm, oblong-inverted-lanceshaped, blunt. Stamens are
8, with long threadlike filaments. Ovary is 0.5-1.5 x 0.25-0.5 mm,
trigonous, styles 3 with head-like stigmas. Nuts are included within
the reddish black fleshy tepals, exserted up to half or one third of
its lengths, forming a baccate fruit, 2-3 x 1-1.5 mm, trigonous, brown,
shining. Sikkim Knotweed is found in C. and E. Himalayas, Garhwal to
Assam, eastward to China. Flowering: July-September.
Identification credit: Tabish
Photographed in Lachung, Sikkim.
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The flower labeled Sikkim Knotweed is ...