|Scientific Name||Senecio atratus||USDA PLANTS Symbol||SEAT|
|Common Name||Tall Black-tip Ragwort||ITIS Taxonomic Serial No.||36101|
Life zones and habitat: Foothills to alpine (7000 to 13200 ft.); roadsides, along trails, rocky areas.
Plant: Erect perennial 14 to 32 inches tall, single or multiple stout, hairy, ribbed stems, in clumps.
Leaves: Hairy, oblong-ovate to oblanceolate with pointed tips and shallowly dentate edges, 4 to 12 inches long, petiolate; basal leaves angled upward, stem leaves are alternate.
Inflorescence: Small composite flower heads about 1/2-inch across in large clusters of 20 to 60 heads; about 5 thin yellow rays, 10 to 12 orange disk florets; light green phyllaries below with black tips.
Bloom Period: July to September.
References: "Flora of Colorado" by Jennifer Ackerfield, SEINet and American Southwest.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2022
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County