|Scientific Name||Osmorhiza occidentalis||USDA PLANTS Symbol||OSOC|
|Common Name||Western Sweetroot, Western Sweet-cicely||ITIS Taxonomic Serial No.||29792|
Life zones and habitat: Foothills to subalpine (6000 to 11000 ft). Moist areas in open meadows and woods.
Plant: Stout, mostly smooth, aromatic perennial, 16 to 48 inches tall.
Leaves: Bi-ternate to bi-pinnate compound leaves, blades 4 to 8 inches long overall; leaflets lanceolate-oblong to ovate 3/4 to 4 inches long, margins serrate and irregularly cut or lobed; petioles 2 to 10 inches long.
Inflorescence: Very small flowers in umbels on peduncles 2-3/8 to 8 inches long; umbels with 5 to 12 rays that are 3/4 to 2-3/4 inches long; easily-overlooked tiny blossoms about 1/16-inch across with 5 rounded yellowish-gteen petals, 5 stamens and greenish style in the center.
Bloom Period: May to August.
References: "Flora of Colorado" by Jennifer Ackerfield, Burke Herbarium and Jepsen Herbarium.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2023
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County