|Scientific Name||Senecio triangularis||USDA PLANTS Symbol||SETR|
|Common Name||Arrowleaf Groundsel, Arrowleaf Ragwort||ITIS Taxonomic Serial No.||36090|
Life zones and habitat: Montane and subalpine (6500 to 13500 ft.); moist areas in meadows, along streams and ponds.
Plant: Perennial, 1 to 5 feet tall, with usually smooth, stout, leafy stems.
Leaves: Alternate, triangular-shaped, 1-3/4 to 8 inches long and half as wide; coarsely-toothed edges and smooth surfaces.
Inflorescence: Composite flower heads about an inch across in corymb-like clusters of 10 to 30; each flower with about 8 narrow yellow rays and relatively small center with darker yellow disk florets; green, smooth phyllaries below.
Bloom Period:July to September.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel and SEINet.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2023
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County