Agoseris species

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Scientific Name Agoseris aurantiaca var. aurantiaca USDA PLANTS Symbol AGAUA
Common Name Orange Agoseris ITIS Taxonomic Serial No. 182405
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (5400 to 12500 ft.); open areas, meadows, grassy hillsides.
Plant: Erect perennial to 12 inches tall; stemless with flower head atop long, curved, naked stalk (peduncle).
Leaves: Basal leaves 2-3/4 to 15 inches long, lanceolate to oblanceolate, edges entire to laciniate; surfaces smooth to slightly hairy.
Inflorescence: Composite blossom, corollas usually orange, sometimes pinkish or yellow; rays about 1 inch across, no disk flowers; phyllaries nearly lanceolate green to rosy purple, often with purple-black spots, blotches, and/or midstripes, outer phyllaries do not appear overlapping.
Bloom Period: June to August.
References: "Guide to Colorado Wildflowers" by G.K. Guennel, "Flora of Colorado" by Jennifer Ackerfield and Flora of North America.
BONAP Distribution Map
Colorado Status:
Native
Scientific Name Agoseris aurantiaca var. purpurea USDA PLANTS Symbol AGAUP
Common Name Orange Agoseris ITIS Taxonomic Serial No. 526863
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (5400 to 12500 ft.); open areas, meadows, grassy hillsides.
Plant: Erect perennial to 12 inches tall; stemless with flower head atop long, curved, naked stalk (peduncle).
Leaves: Basal leaves 2-3/4 to 15 inches long, lanceolate to oblanceolate, edges entire to laciniate; surfaces smooth to slightly hairy.
Inflorescence: Composite blossom, corollas usually orange to yellow, sometimes pinkish; rays about 1 inch across, no disk flowers; phyllaries somewhat ovate or obovate green to rosy purple, often with purple-black spots, blotches, and/or midstripes, outer phyllaries are overlapping.
Bloom Period: June to August.
References: "Guide to Colorado Wildflowers" by G.K. Guennel, "Flora of Colorado" by Jennifer Ackerfield and Flora of North America.
BONAP Distribution Map
Colorado Status:
Native
Scientific Name Agoseris glauca USDA PLANTS Symbol AGGL
Common Name Pale Agoseris, False Dandelion ITIS Taxonomic Serial No. 36490
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (5500 to 13800 ft.); rocky areas and streamsides, meadows, woodlands.
Plant: Erect perennial 10 to 14 inches tall; stemless with flower head atop long, naked stalk (peduncle).
Leaves: Pale green basal leaves, erect to decumbent, lanceolate to oblanceolate 1 to 18 inches long, entire to somewhat toothed or lobed.
Inflorescence: Composite solitary flower head 1 to 2 inches across with yellow rays with small teeth at the tips and protruding yellow stamens; no disk flowers; phyllaries lanceolate or linear with pointed tips, smooth or hairy, green or purple with purple-black spots, midstripe, or tips.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, "A Guide to Rocky Mountain Plants" by Nelson and Williams and SEINet.
BONAP Distribution Map
Colorado Status:
Native
Scientific Name Agoseris parviflora (Agoseris glauca var. laciniata) USDA PLANTS Symbol AGGLL
Common Name Steppe Agoseris ITIS Taxonomic Serial No. 508446
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (5500 to 12500 ft.); dry areas in prairies, sagebrush meadows, conifer woodlands.
Plant: Erect perennial up to 10 inches tall; stemless with flower head atop long, naked stalk (peduncle).
Leaves: Basal, erect to decumbent lanceolate, linear, oblong, or oblanceolate, margins lobed, sometimes dentate or entire.
Inflorescence: Composite solitary flower head atop peduncle 4 to 10 inches long; flower 1 to 1-1/2 inches across with yellow rays toothed at the tips; no disk flowers; yellow protruding stamens; smooth involucre 3/4 to 1-1/4 inches tall, outer phyllaries ovate, inner elliptic to oblong, pinkish with purple-black spots, midstripe, or tips, lanceolate or linear with acute to acuminate tips.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield and SEINet.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2020