Eriogonum umbellatum var. majus
(Sub-alpine Sulphur-flower)
Eriogonum umbellatum var. majus, Lower Cataract Lake, Summit Co. 0848/0864
Eriogonum umbellatum var. majus, Frisco Peninsula, Summit Co. 1627
Eriogonum umbellatum var. majus, North Swan Valley, Summit Co. 6019
Eriogonum umbellatum var. majus, Frisco Peninsula, Summit Co. 5475
Eriogonum umbellatum var. majus, Breckenridge, Summit Co. 1201
Eriogonum umbellatum var. majus, Frisco Peninsula, Summit Co. 1620
Upper leaf surface, Eriogonum umbellatum var. majus, Frisco Peninsula, Summit Co. 1633
Lower leaf surface, Eriogonum umbellatum var. majus, Frisco Peninsula, Summit Co. 1631
| Scientific Name | Eriogonum umbellatum var. majus | USDA PLANTS Symbol | ERUMM |
| Common Name | Sub-alpine Sulphur-flower, Sulphur-flower Buckwheat | ITIS Taxonomic Serial No. | 528020 |
| Family | Polygonaceae (Buckwheat) | SEINet Reference |
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| Description |
Life zones and habitat: Foothills to alpine (6500 to 12800 ft); dry slopes, sagebush meadows, forests or tundra. Plant: Mat-forming perennial with erect stems 6 to 12 inches tall; stems hairy to smooth, leafless. Leaves: Basal leaves oblanceolate to elliptic, lower surface grayish, densely covered with fine hairs; upper surfaces green, smooth or somewhat hairy; 3/8 to 3/4-inch long and up to 5/8-inch wide. Inflorescence: Clusters of tiny, sometimes red-tinted, buds becoming creamy-white flowers, each less than 1/4-inch across, in large umbels with a single whorl of green, leafy bracts just below. Bloom Period: June to September. References: "Flora of Colorado" by Jennifer Ackerfield and Flora of North America. |
BONAP Distribution Map Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2025
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains
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