|Scientific Name||Senecio bigelovii var. hallii||USDA PLANTS Symbol||SEBI2|
|Common Name||Nodding Ragwort, Rayless Senecio||ITIS Taxonomic Serial No.||36103|
Life zones and habitat: Montane and subalpine (7800 to 12000 ft.); dry open woods, hillsides and meadows.
Plant: Erect perennial 16 to 40 inches tall, single or a few stems, woolly-hairy (var. hallii) or smooth (var. bigelovii).
Leaves: Ovate to lanceolate, toothed edges, 3 to 6 inches long near base; alternate and much smaller upward; lower leaves usually tapering to petioles and mid and upper leaves may be weakly clasping.
Inflorescence: Small, nodding, composite flower heads about 1/2-inch across in clusters of 2 to 12 rayless heads, each with many yellow disk florets enclosed by phyllaries, green early and becoming dark purple later in the season; ~21 phyllaries 1/3 to 1/2-inch long.
References: "Flora of Colorado" by Jennifer Ackerfield, American Southwest and SEINet and Flora of North America.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2023
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County