Water Smartweed

Persicaria punctata

Mrs. Austin's Knotweed

Polygonum austiniae

Bolander's Knotweed

Polygonum bolanderi

California Knotweed

Polygonum californicum

Douglas' Knotweed

Polygonum douglasii

Scotts Valley Polygonum

Polygonum hickmanii

Wiry Knotweed

Polygonum majus

Marin Knotweed

Polygonum marinense

Broadleaf Knotweed

Polygonum minimum

Beach Knotweed

Polygonum paronychia

Parry's

Polygonum parryi

Milkwort Knotweed

Polygonum polygaloides

Fruitleaf Knotweed

Polygonum polygaloides ssp. confertiflorum

Modoc County Knotweed

Polygonum polygaloides ssp. esotericum

Kellogg's Knotweed

Polygonum polygaloides ssp. kelloggii

Bushy Knotweed

Polygonum ramosissimum

Bushy Knotweed

Polygonum ramosissimum ssp. ramosissimum

Polygonum sawatchense

Polygonum sawatchense ssp. oblivium

Polygonum sawatchense ssp. sawatchense

Shasta Knotweed

Polygonum shastense

Spurry Knotweed

Polygonum spergulariiforme

California Dock

Rumex californicus

Willow Dock

Rumex crassus

Golden Dock

Rumex fueginus

Canaigre

Rumex hymenosepalus

Rumex lacustris

Western Dock

Rumex occidentalis

Alpine Sheep Sorrel

Rumex paucifolius

Rumex persicarioides

Willow Dock

Rumex salicifolius

Rumex transitorius

Rumex triangulivalvis

Winged Dock

Rumex venosus

Violet Dock

Rumex violascens

Chaparral Ragwort

Senecio aphanactis

Rayless Ragwort

Senecio aronicoides

San Gabriel Ragwort

Senecio astephanus

Dune Ragwort

Senecio blochmaniae

California Ragwort

Senecio californicus

Clark's Ragwort

Senecio clarkianus

Threadleaf Ragwort

Senecio flaccidus

Douglas' Groundsel

Senecio flaccidus var. douglasii

Smooth Threadleaf Ragwort

Senecio flaccidus var. monoensis

Dwarf Mountain Ragwort

Senecio fremontii

Dwarf Mountain Ragwort

Senecio fremontii var. fremontii

Western Dwarf Mountain Ragwort

Senecio fremontii var. occidentalis

Sweet Marsh Ragwort

Senecio hydrophiloides

Water Groundsel

Senecio hydrophilus

Lambstongue Ragwort

Senecio integerrimus

Columbia Ragwort

Senecio integerrimus var. exaltatus

Lambs-tongue Ragwort

Senecio integerrimus var. major

Island Senecio

Senecio lyonii

Mojave Ragwort

Senecio mohavensis

Sierra Ragwort

Senecio scorzonella

Tall Ragwort

Senecio serra

Tall Ragwort

Senecio serra var. serra

Arrowhead Butterweed

Senecio triangularis