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| 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 |  |
Tepals (petals and sepals) 5 in single spiral. Flowers open in corymb. Leaves triangular. | Images Information |
| Fallopia
bindweed |
6 |  |
Tepals (petals and sepals) 5; plants twining like a vine or shrub-like | Images Information |
| Persicaria
knotweed, tearthumb, smartweed |
14 |  |
Tepals (petals and sepals) 5 in dense but variously shaped clusters. Bracts green, leaves not jointed on their stalk. | Images Information |
| Polygonella
joint-weed |
1 |  |
Tepals (petals and sepals) 5 in single spiral. Flowers in terminal raceme. Stalk of flower jointed near base. | Images Information |
| Polygonum
smartweed |
7 |  |
Tepals (petals and sepals) 5 in solitary or small clusters. Bracts dry, not green; leaves jointed | Images Information |
| Rheum
rhubarb |
1 |  |
Tepals (petals and sepals) 6. Large basal leaves, thick reddish flower stem. | Images Information |
| Rumex
dock sorrel, sorrel |
14 |  |
Tepals (petals and sepals) 6 in 2 series of 3. | Images Information |
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