synonym
A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...
''Aconogonon alpinum''), commonly known as alpine knotweed, is similar to '' Koenigia alaskana'', but differs in leaf size and
achene
An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not ope ...
characteristics. It is native to Europe and temperate Asia.
It is one of the parents of the cultivated hybrid ''Koenigia'' × ''fennica'', the other being ''
Koenigia weyrichii
''Koenigia weyrichii'' (synonym ''Persicaria weyrichii''), the Chinese knotweed or Weyrich's knotweed, is a large, perennial, rhizomatous herb native to East Asia.
It is one of the parents of the cultivated hybrid ''Koenigia'' × ''fennica'', t ...