Species:
Aconogonon phytolaccifolium var. phytolaccifolium (fleeceflower, poke or alpine knotweed)
Eriogonum baileyi var. praebens (Bailey's buckwheat)
Eriogonum flavum var. piperi (Piper's buckwheat)
Eriogonum heracleoides var. heracleoides (Wyeth's or parsnip-flowered buckwheat)
Eriogonum inerme var. inerme (unarmed buckwheat)
Eriogonum microthecum var. laxiflorum (Great Basin buckwheat, slender buckwheat)
Eriogonum ovalifolium var. ovalifolium (yellow cushion buckwheat)
Eriogonum ovalifolium var. pansum (branched cushion buckwheat)
Eriogonum ovalifolium var. purpureum (purple cushion buckwheat)
Eriogonum pyrolifolium (Shasta, alpine, or oarleaf buckwheat)
Eriogonum spergulinum var. reddingianum (spurry buckwheat)
Eriogonum strictum var. proliferum (proliferous or strict buckwheat)
Eriogonum umbellatum var. ellipticum (starry sulphur-flowered buckwheat)
Eriogonum umbellatum var. stragulum (spreading sulphur-flowered buckwheat)
Eriogonum vimineum (broom buckwheat)
Fallopia convolvulus (black bindweed, climbing buckwheat, vornbind)
Persicaria amphibia (water smartweed)
Persicaria hydropiper (marshpepper smartweed)
Persicaria lapathifolia (curlytop, nodding, or pale smartweed)
Persicaria maculosa (spotted smartweed, ladysthumb)
Persicaria pensylvanica (Pensylvania smartweed)
Polygonum aviculare (common or prostrate knotweed, doorweed)
Polygonum douglasii (Douglas's knotweed)
Polygonum majus (wiry knotweed)
Polygonum polygaloides ssp. confertiflorum (Watson's, close-flowered, or fruitleaf knotweed)
Polygonum ramosissimum (branched knotweed)
Polygonum sawatchense ssp. oblivium (sublime knotweed)
Reynoutria japonica (Japanese knotweed)
Rumex acetosella (sheep sorrel)
Rumex crispus (curly dock, yellow dock)
Rumex obtusifolius (broadleaf or bitter dock)
Rumex patientia (patience dock)
Rumex salicifolius var. denticulatus (toothed willow dock)
Rumex salicifolius var. triangulivalvis (triangle or willow dock)
Rumex stenophyllus (narrowleaf dock)
Rumex venosus (sand, veiny, or winged dock)