Weed: Noxious
Watershed: No Information
Purple
Location: No Information
 | Scotch thistle Scientific Name Onopordum acanthium Family Composites, Sunflower Flower Color Purple Plant Type Forb Native No Weed Noxious |
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| Scotch thistle Scientific Name Onopordum acanthium Family Composites, Sunflower Flower Color Purple Plant Type Forb Native No Weed Noxious |
 | marshelder Scientific Name Iva xanthifolia Family Composites, Sunflower Plant Type Forb Native No Weed Yes |
 | spotted knapweed Scientific Name Centaurea maculosa Family Composites, Sunflower Plant Type Forb Native No Weed Yes |
 | common cockleburr Scientific Name Xanthium strumarium Family Composites, Sunflower Flower Color Green Plant Type Forb Introduced North America Native No Weed Yes |
 | diffuse knapweed Scientific Name Centaurea diffusa Family Composites, Sunflower Flower Color Light Pink Plant Type Forb Native No Weed Yes |
 | common groundsel Scientific Name Senecio vulgaris Family Composites, Sunflower Flower Color White, yellow Plant Type Forb Native No Weed Yes |
| old-man-in-the-Spring Scientific Name Senecio vulgaris Family Composites, Sunflower Flower Color White, yellow Plant Type Forb Native No Weed Yes |
 | annual sowthistle Scientific Name Sonchus oleraceus Family Composites, Sunflower Flower Color Yellow Plant Type Forb Native No Weed Yes |
 | rush skeletonweed Scientific Name Chondrilla juncea Family Composites, Sunflower Flower Color Yellow Plant Type Forb Introduced Yes Native No Weed Yes |
 | yellow starthistle Scientific Name Centaurea solstitialis Family Composites, Sunflower Flower Color Yellow Plant Type Forb Native No Weed Yes |
 | pineappleweed Scientific Name Matricaria matricarioides Family Composites, Sunflower Plant Type Forb Native North America Weed Yes |
 | mountain tarweed Scientific Name Madia glomerata Family Composites, Sunflower Flower Color Yellow Plant Type Forb Native North America |
 | horseweed Scientific Name Conyza canadensis Family Composites, Sunflower Plant Type Forb Native North America grasslands |
 | poverty sumpweed Scientific Name Iva axillaris Family Composites, Sunflower Plant Type Forb Native Yes Weed Can be |
 | oneflower helianthella Scientific Name Helianthella uniflora Family Composites, Sunflower Flower Color Brilliant Yellow Plant Type Forb Native Yes Weed No |
| rocky mountain helianthella Scientific Name Helianthella uniflora Family Composites, Sunflower Flower Color Brilliant Yellow Plant Type Forb Native Yes Weed No |
| rocky mountain little sunflower Scientific Name Helianthella uniflora Family Composites, Sunflower Flower Color Brilliant Yellow Plant Type Forb Native Yes Weed No |
 | pathfinder Scientific Name Adenocaulon bicolor Family Composites, Sunflower Flower Color Green, mixed Plant Type Forb Location McCall Native Yes Weed No |
| trail plant Scientific Name Adenocaulon bicolor Family Composites, Sunflower Flower Color Green, mixed Plant Type Forb Location McCall Native Yes Weed No |
 | low hawksbeard Scientific Name Crepis modocensis Family Composites, Sunflower Flower Color Yellow Plant Type Forb Native Yes Weed No |
| modoc hawksbeard Scientific Name Crepis modocensis Family Composites, Sunflower Flower Color Yellow Plant Type Forb Native Yes Weed No |
| rush skeletonplant Scientific Name Lygodesmia juncea Family Composites, Sunflower Flower Color Light purple Plant Type Forb Native Yes Weed Yes |
 | Atkinson's coreopsis Scientific Name Coreopsis tinctoria Nutt. var. atkinsoniana Family Composites, Sunflower Plant Type Forb Short Description Atkinson's coreopsis grows east of New Plymouth, ID, on low lying wet soils near the Payette River. It is a native plant in the western United states and British Columbia. Native Yes |
 | showy townsend daisy Scientific Name Townsendia florifer Family Composites, Sunflower Flower Color White Plant Type Forb Short Description Annual plant.. Native Yes |
 | musk thistle Scientific Name Carduus nutans Family Composites, Sunflower Flower Color Purple Plant Type Forb Introduced Yes Weed Yes |