Robert W. Freckmann Herbarium
University of Wisconsin - Stevens Point

Vascular Plants

Plants of Wisconsin

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Polygonaceae: Buckwheat

Small ball-like flowers in clusters of racemes, spike-like panicles, or heads. Plants with jointed stems with swollen nodes resulting in the name meaning "many knees". Leaves simple usually alternate often forming a collar-like sheath enclosing the node.
Flower Formula:  Sepals 5 or 3+3; Petals 0 Glossary

Genus 
(Click for Taxon List)
WI Taxa
(map link)
Photo Genus Traits Google Searches
Fagopyrum
buckwheat
1 Photo of Fagopyrum Tepals (petals and sepals) 5 in single spiral. Flowers open in corymb. Leaves triangular. Images   Information
Polygonella
joint-weed
1 Photo of Polygonella Tepals (petals and sepals) 5 in single spiral. Flowers in terminal raceme. Stalk of flower jointed near base. Images   Information
Polygonum
fleece-flower, knotweed, smartweed
34 Photo of Polygonum Tepals (petals and sepals) 5 in single spiral. Stalk of flower jointed near or at top. Images   Information
Rheum
rhubarb
1 Photo of Rheum Tepals (petals and sepals) 6. Large basal leaves, thick reddish flower stem. Images   Information
Rumex
dock sorrel, sorrel
15 Photo of Rumex Tepals (petals and sepals) 6 in 2 series of 3. Images   Information

Vascular Plants

Plants of Wisconsin

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