Polygonum arifolium L.

Polygonum arifolium plant

Family - Polygonaceae

Stems - No info. yet.

Polygonum arifolium nodeNode.

Polygonum arifolium stemStem.

Leaves - No info. yet.

Polygonum arifolium leafTypical leaf.

Inflorescence - No info. yet.

Polygonum arifolium axisAxis of inflorescence.

Flowers - No info. yet.

Polygonum arifolium perianthClosed flowers.

Flowering - July - October.

Habitat - Wet sandy ground near spring branches, often partially submerged.

Origin - Native to U.S.

Other info. - This species is quite rare in Missouri and can only be found in a few locations of the southeast portion of the state. The plant reaches the extreme western edge of its geographical range in the state.
This plant is very easy to identify in the field because of its square, prickly stems, its hastate leaves, and its big flowers. Habitat is also a good characteristic to use for ID as this plant grows in wet areas.

Photographs taken in Brown Summit, NC., 9-8-02.