Japanese Knotweed - Reynoutria japonica

Samarae are winged dry fruits that have flattened wings of fibrous, papery tissue containing a seed. The shape of a samara enables the wind to carry the seeds farther away.

Habitat: Edge of a meadow

comments (4)

Gary B

Lion

The three-winged samara points to Polygonaceae. Posted 5 years ago
1. Christine Young
  
  Lion
  
  Thanks Gary! Posted 5 years ago
2. 1. Gary B
    
    Lion
    
    You're welcome, Christine.
    
    When I looked closely at the photo a few things jumped out at me. First, it appeared that there had been many samaras on the stems and that these were in clusters (there are many peduncles without samara). Then I looked at the samaras in the upper middle and lower middle and noticed that the top one had three wings which pretty much points to Polygonaceae. After looking at the photo of the whole plant it seemed that Japanese Knotweed was the way to go. Posted 5 years ago
  2. 1. Christine Young
      
      Lion
      
      Oh, interesting! Thanks for the details...I see this photo completely differently now. Posted 5 years ago

The Japanese Knotweed

''Reynoutria japonica'', synonyms ''Fallopia japonica'' and ''Polygonum cuspidatum'', is a large species of herbaceous perennial plant of the knotweed and buckwheat family Polygonaceae. It is commonly known as Asian knotweed or Japanese knotweed. It is native to East Asia in Japan, China and Korea. In North America and Europe, the species has successfully established itself in numerous habitats and is classified as an invasive species in several countries.

Japanese knotweed has hollow.. more

Info 7 0

Similar species: Pinks, Cactuses, And Allies

Species identified by Christine Young