Erigeron species

DSC 2545

Tall Fleabane (Erigeron elatior)

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Scientific Name Erigeron divergens USDA PLANTS Symbol ERDI4
Common Name Speading Fleabane, Speading Daisy ITIS Taxonomic Serial No. 35852
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills and montane (4000 to 8500 ft.); dryer meadows, slopes, open woodlands.
Plant: Erect annual, biennial or short-lived perennial often branching from base, 4 to 28 inches tall; leafy, hairy stems.
Leaves: Hairy alternate stem leaves and a cluster of basal leaves, linear to oblanceolate, up to 2 inches long; lower leaves petiolate, upper leaves clasping; margins entire to slightly lobed.
Inflorescence: Showy composite flowers about 1-inch across and nodding buds on leafy peduncles with many (75-150) white-to-purple rays, yellow disk florets, and hairy, somewhat glandular phyllaries below.
Bloom Period: May to September.
References: "Flora of Colorado" by Jennifer Ackerfield, SEINet, www.americansouthwest.net, and "Flora of Colorado" by Jennifer Ackerfield.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron elatior USDA PLANTS Symbol EREL9
Common Name Tall Fleabane, Daisy ITIS Taxonomic Serial No. 35857
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (6500 to 13500 ft.); meadows and woodlands.
Plant: Erect perennial 8 to 24 inches tall growing in clusters; leafy stems with numerous, fine, long, white hairs.
Leaves: Mostly stem leaves, oblanceolate to narrowly elliptic, 1-1/4 to 4 inches long, surfaces slightly hairy and margins entire; upper leaves clasping.
Inflorescence: Very hairy, pink nodding buds; one or more composite flowers ~1 to 1-3/4 inches across with many (75-150) white-to-pink-to-lavender, narrow rays; yellow disk florets; long, thin, linear phyllaries below, green or purple in color, reflexed or spreading and glandular with long hairs.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, SW Colorado Wildflowers, www.americansouthwest.net and Flora of North America.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron formosissimus USDA PLANTS Symbol ERFO3
Common Name Beautiful Daisy, Beautiful Fleabane ITIS Taxonomic Serial No. 35869
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (7000 to 12000 ft.); meadows and forests.
Plant: Perennial 4 to 22 inches tall; erect simply-branched stems, may be hairy and glandular.
Leaves: Basal leaves in a dense cluster, oblanceolate, obovate, or oval 3/4 to 4 inches long, petiolate; smaller stem leaves clasping and oblanceolate to spatulate or oblong; both with ciliate, entire margins.
Inflorescence: One or more composite heads 3/4 to 1-3/8 inches across with many (75 to 150) blue to purple, narrow rays; yellow disk florets; greenish to slightly purple phyllaries with tips slightly curved back, somewhat hairy and glandular.
Bloom Period: June to September.
References: "Flora of Colorado" by Jennifer Ackerfield, SW Colorado Wildflowers, www.americansouthwest.net and Flora of North America.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron glacialis (Erigeron peregrinus) USDA PLANTS Symbol ERPEC
Common Name Subalpine Fleabane, Subalpine Daisy ITIS Taxonomic Serial No. 780312
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Montane to alpine (8000 to 14000 ft.); moist areas in meadows, streamsides, open woodlans tundra.
Plant: Erect perennial 2 to 28 inches tall; smooth to slightly hairy and sticky stems.
Leaves: Petiolate basal leaves 1-1/2 to 6 inches long, thick, narrow, lanceolate to spatulate; much smaller stem leaves are lanceolate to ovate, sessile or clasping, sometimes slightly hairy.
Inflorescence: Composite flower heads about 1-1/2 inches across with many (30-105) rays, deep pink to purple, sometimes white to pale blue, generally wider than other Erigerons; yellow disk florets in the center; generally smooth, glandular phyllaries with pointed, often reddish, spreading tips.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, Jepson eFlora, SW Colorado Wildflowers and Flora of North America.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron grandiflorus USDA PLANTS Symbol ERGR3
Common Name Rocky Mountain Alpine Daisy ITIS Taxonomic Serial No. 35876
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Subalpine and alpine (9500 to 14000 ft.); dry meadows and slopes normally above timberline.
Plant: Short, erect perennial 1 to 8 inches tall; simple, solitary, sparsely to moderately soft-hairy stems.
Leaves: Basal leaves oblanceolate to spatulate, smooth or somewhat hairy surfaces with hairy edges, up to 3 inches long; stem leaves sparse and smaller and linear.
Inflorescence: Small, solitary composite flower heads 3/4 to 1 inch across with many (60 to 125) white to light blue or pinkish rays and yellow disk; involucre with green to purplish, pointed phyllaries with dense long hairs.
Bloom Period: July to September.
References: "Flora of Colorado" by Jennifer Ackerfield, E-Flora BC, SW Colorado Wildflowers, and Montana Field Guide.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron leiomerus USDA PLANTS Symbol ERLE6
Common Name Rockslide Daisy ITIS Taxonomic Serial No. 35892
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Monatne to alpine (9000 to 13500 ft.); rocky areas in meadows and scree slopes.
Plant: Short, leafy perennial 2 to 4 inches tall.
Leaves: Basal and a few stem leaves, 5/8 to 2-3/4 inches long, spatulate to oblanceolate, entire margins, smooth surfaces with few hairs.
Inflorescence: Single composite flower head per stem, each with 15-60 white to blue or purple rays and yellow disk florets; phyllaries below are often purplish and mostly hairless.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, www.americansouthwest.net and Flora of North America.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron pinnatisectus USDA PLANTS Symbol ERLE6
Common Name Featherleaf Fleabane ITIS Taxonomic Serial No. 35926
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Montane to alpine (8900 to 13500 ft.); meadows and boulder fields, rocky tundra.
Plant: Short perennial up to 4 inches tall with erect stout, curved stems.
Leaves: Basal, stalked leaves up to 2 inches long, pinnately-dissected into finger-like, somewhat hairy and minutey glandular lobes; stem leaves mostly linear, becoming much smaller or absent upward, margins entire, usually coarsely ciliate.
Inflorescence: Composite flower head about 1 inch across, one per stem, each with 40 to 70 light blue, sometimes slightly purplish rays; yellow disk florets; minutely glandular, somewhat hairy phyllaries below.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel and Flora of North America.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron speciosus USDA PLANTS Symbol ERSP4
Common Name Showy Daisy, Aspen Fleabane ITIS Taxonomic Serial No. 35950
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Fooothills to subalpine (5500 to 12000 ft.); open areas, meadows.
Plant: Perennial up to 32 inches tall with shiny, slightly hairy stems.
Leaves: Basal leaves withered by blooming; stem leaves lanceolate and without stalks, upper are clasping; slightly hairy faces and hairy edges.
Inflorescence: Corymbiform arrays of 4 to 20 composite flower heads up to 1-3/4 inch across each with many (75 to 150) blue to lavender rays becoming slighty curved at the tips; many yellow disk florets; phyllaries below unequal, usually smooth, sometimes minutely glandular.
June to September.
Reference: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildlowers" by G.K. Guennel and SEINet.
BONAP Distribution Map
Colorado Status:
Native


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© Tom Lebsack 2020