|Scientific Name||Cirsium scariosum||USDA PLANTS Symbol||CISC2|
|Common Name||Meadow Thistle||ITIS Taxonomic Serial No.||36143|
Life zones and habitat: Montane to subalpine (7000 to 12500 ft.); moist open areas; meadows, along streams and roadsides.
Plant: Stemless or upright biennial/perennial, up to 40 inches tall; fleshy, thick single or multiple stalks branched from near base.
Leaves: Basal and stem leaves, linear to elliptic 4 to 16 inches long, very wavy, shallow or deeply pinnately-lobed with a broad central midstrip; sessile; smooth above and woolly-hairy below; spiney.
Inflorescence: Dense clusters of one to many flower heads; white to light lavender disk florets 3/4 to 1-3/8 inches long; pointed phyllaries with spines and teeth; no ray flowers.
Bloom Period: June to September.
References: "Flora of Colorado" by Jennifer Ackerfield and others.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2022
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County