(Western Sweetroot)
Osmorhiza occidentalis, FR 612 Lone Cone Area, San Miguel Co. 3392
Osmorhiza occidentalis, FR 612 Lone Cone Area, San Miguel Co. 3396
Osmorhiza occidentalis, FR 612 Lone Cone Area, San Miguel Co. 3387
Osmorhiza occidentalis, FR 612 Lone Cone Area, San Miguel Co. 3399
| Scientific Name | Osmorhiza occidentalis | USDA PLANTS Symbol | OSOC |
| Common Name | Western Sweetroot, Western Sweet-cicely | ITIS Taxonomic Serial No. | 29792 |
| Family | Apiaceae (Parsley) | SEINet Reference |
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| Description |
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 |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County