Family - Polygonaceae

Stems - No info. yet.

Node of stem.

Leaves - No info. yet.

Upper leaves.

Lower leaf.

Inflorescence - No info. yet.

Flowers - No info. yet.

Flowering - August - September.

Habitat - Waste ground, fence rows, roadsides, railroads.

Origin - Native to Japan.

Other info. - This large, showy species can be found scattered throughout Missouri but is still mostly uncommon. It will most certainly spread with time. The plant is quite large and bushy, growing to +4m tall. It makes a good cultivated specimen but is hard to keep under control. When left undisturbed it spreads rapidly. The sprays of white flowers attract many insects.
P. cuspidatum is considered a noxious weeds in many parts of the U.S.

Photographs taken in Marquette, MI., 9-8-03.