Senecio Genus --- aster subfamily 3.4

​Aster 3.1 (Genus A to F) -- Aster 3.2 (Genus G to O) -- Aster 3.3 (Genus P to R) -- Aster 3.4 (Genus S to Z)  

Holm's ragwort (Senecio amplectens var. holmii) -- in July -- Baker Pass, Never Summer Mountains, Routt National Forest, CO   

Holm's ragwort (Senecio amplectens var. holmii) -- in July -- Boreas Pass Road, Park County, CO

tall blacktip ragwort (Senecio atratus) -- in July -- Cameron Pass, Colorado State Forest State Park, CO          

tall blacktip ragwort (Senecio atratus) -- in July -- Loveland Pass, Arapaho National Forest, CO    

tall blacktip ragwort (Senecio atratus) -- in August -- Weston Pass Road, Lake County, CO

golden ragwort (Senecio aureus) -- in April -- Natchez Trace Parkway, southern Tennessee        

thickleaf ragwort (Senecio crassulus) -- in August -- Snowy Range, Medicine Bow National Forest, WY     

thickleaf ragwort (Senecio crassulus) -- in July -- Zimmerman Lake Trail, Laramie County, CO

thickleaf ragwort (Senecio crassulus) -- in July -- Buffalo Pass Road, Jackson County, CO   

King's ragwort (Senecio eremophilus var. kingii) -- in September -- Bellaire Lake, Red Feather Lakes Area, Larimer County, CO

King's ragwort (Senecio eremophilus var. kingii) -- in September -- Marshall Pass Road, Saguache County, CO

threadleaf ragwort (Senecio flaccidus) -- in September --  Villanueva State Park, NM            

threadleaf ragwort (Senecio flaccidus) -- in April -- Organ Mountains-Desert Peaks National Monument, NM

dwarf mountain ragwort (Senecio fremontii var. biltoides)  -- in August -- Mt. Evans Wilderness, Arapaho NF    

dwarf mountain ragwort (Senecio fremontii var. biltoides) -- in August -- Snowy Range, Medicine Bow National Forest   

dwarf mountain groundsel (Senecio fremontii var. fremontii) -- in July -- Lassen Volcanic National Park, CA   

butterweed (Senecio glabellus) -- in April -- Natchez Trace Parkway, southern Tennessee       

lambstongue ragwort (Senecio integerrimus) -- in May -- South Valley Loop Trail, Lory State Park, CO                 

lambstongue ragwort (Senecio integerrimus) -- in June -- Sportsman Lake Road, WY   

lambstongue ragwort (Senecio integerrimus) -- in May -- Mariana Butte Natural Area, Loveland, CO

tall ragwort (Senecio serra var. admirabilis) -- in July -- Buffalo Pass Road, Jackson County, CO   

tall ragwort (Senecio serra var. admirabilis) -- in August -- Mount Zirkel Wilderness, Jackson County, CO

tall ragwort (Senecio serra var. serra) -- in July -- Grand Teton National Park, WY

broom-like ragwort (Senecio spartioides) -- in August -- Sand Creek National Landmark, WY          

broom-like ragwort (Senecio spartioides) -- in August -- Prospect Ponds/ CSU ELC, Fort Collins, CO     

​dandelion ragwort (Senecio taraxacoides) -- in July -- Mount Evans, Clear Creek County, CO

dandelion ragwort (Senecio taraxacoides) -- in August -- Mt. Evans Wilderness, Arapaho National Forest, CO     

arrowleaf ragwort (Senecio triangularis) -- in July -- Wild Basin, Rocky Mountain National Park, CO    

arrowleaf ragwort (Senecio triangularis) -- Boreas Pass Road 10, Summit County, CO   

arrowleaf ragwort (Senecio triangularis) -- in July -- Shoshone National Forest, Fremont County, WY

Wooton's ragwort (Senecio wootonii) -- in July -- Peak 7 area, Summit County, CO  

Wooton's ragwort (Senecio wootoniii) -- in June -- Golden Gate Canyon State Park, CO