Persicaria Galapagensis
''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.''Persicaria''.
Flora of North America. It has a cosmopolitan distribution, with species occurring nearly worldwide.''Persicaria''.
New South Wales Flora Online. National Herbarium, Royal Botanic Garden, Sydney. The genus was segregated from ''Polygonum''.Wilson, K. L. (1990)

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Persicaria Capitata
''Persicaria capitata'', the pink-headed persicaria, pinkhead smartweed, pink knotweed, Japanese knotweed, or pink bubble persicaria, is an Asian species of plants in the genus ''Persicaria'' within the buckwheat family. It is native to Asia (China, Indian Subcontinent, Indochina) and grown as an ornamental in other countries. It has become naturalized in Australia, South Africa and a few scattered locations in the United States. Description ''Persicaria capitata'' is a prostrate herb. The leaves are 1–6 cm long, 0.7–3 cm wide with pink to red bands or blotches and short scattered hairs. The spikes are 5–10 mm long and 5–7 mm in diameter. ''Persicaria capitata'' has a strong urine-scented odour. Distribution and habitat ''Persicaria capitata'' is a native of Asia. It has naturalised in parts of Australia and North America. Between 2008 and 2013 it has been recorded as an invasive plant in Ireland from the Counties Fermanagh, Kilkenny, Wexfor ...
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