Nothocalais troximoides

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Scientific Name Nothocalais troximoides USDA PLANTS Symbol NOTR2
Common Name Sagebrush False Dandelion, False Agoseris ITIS Taxonomic Serial No. 38134
Family Asteraceae (Sunflower) SEINet
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Description Life zones and habitat: Reported in the literature only in far western US and British Columbia at low elevations up to 6200 ft.; images below were taken at about 11,500 ft. west of Hoosier Pass, Park County. Open, rocky areas.
Plant: Erect perennial 2 to 18 inches tall, stem (peduncle) somewhat purplish, often with short hairs below head.
Leaves: Linear to linear-lanceolate, 3 to 12 inches long, with smooth or often wavy edges.
Inflorescence: Solitary heads each with a long involucre, 0.6 to 1 inch long; narrow phyllaries with purplish mid-ribs; 13-90 yellow ray florets with notched tips; the fruiting heads form a dandelion-like ball at maturity.
References: SEINet and Burke Museum of Natural History
Note: This could be the wrong ID; it is possible that the plant is N. cuspidata which occurs in Colorado but at much lower elevations. It also bears some resemblance to Agoseris ssp., except for the shape of the leaves and phyllaries.
Colorado Status

© Tom Lebsack 2021