Erigeron species

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Scientific Name Erigeron bellidiastrum USDA PLANTS Symbol ERBE2
Common Name Pretty Daisy, Western Fleabane ITIS Taxonomic Serial No. 35827
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains to montane (3400 to 8800 ft.); dry, sandy soils in open ares, grasslands and shrublands.
Plant: Annual or biennial 4 to 20 inches tall with multiple erect to ascending stems that are densely covered with upcurved hairs.
Leaves: A cluster of spatulate to oblanceolate or linear basal leaves up to 3 inches long may persist until flowering, but most leaves are alternate along the stem, linear to oblanceolate or spatulate, 3/8 to 2-3/8 inches long and less than 1/4-inch wide; edges usually entire but may have a pair of shallow lobes or teeth; surfaces slightly hairy.
Inflorescence: One or up to 12 showy composite flower heads in arrays on stem branches, each about 1 inch across with 20 to 70 rays that are white, sometimes tinged pink, purple or blue and drying to a purplish color; many yellow disk florets; green phyllaries densely covered with distinctive curved white hairs.
Bloom Period: May to September.
References: "Flora of Colorado" by Jennifer Ackerfield, SEINet and Kansas Wildflowers & Grasses.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron compositus USDA PLANTS Symbol ERCO4
Common Name Cutleaf Daisy, Fernleaf Fleabane ITIS Taxonomic Serial No. 35843
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (5300 to 14000 ft.); open areas in meadows, rocky areas, scree slopes.
Plant: Short perennial up to 10 inches tall with erect, somewhat hairy and reddish stems.
Leaves: Mostly basal, fleshy, grayish-green leaves, up to 2 inches long overall, spatulate in outline and divided two to four times into short linear, hairy lobes; stem leaves smaller.
Inflorescence: Single composite flower heads about 1 inch across with 20 to 60 white, sometimes bluish, rays; many yellow disk florets; green or purple phyllaries in two or three rows, and covered with spreading white hairs.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America and www.americansouthwest.net.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Erigeron coulteri USDA PLANTS Symbol ERCO6
Common Name Coulter's Daisy, Whiteray Daisy ITIS Taxonomic Serial No. 35845
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (7500 to 14000 ft.); moist areas, meadows, streambanks, open woodlands.
Plant: Erect perennial 4 to 24 inches tall, somewhat hairy or smooth, leafy stems.
Leaves: Hairy basal and stem leaves, lower blades broadly oblanceolate to elliptic or oblong-lanceolate, 1-1/4 to 4-3/4 inches long and 1/4 to 1 inch wide, margins entire or with 1 to 5 pairs of shallow teeth; upper stem leaves becoming elliptic-ovate to lanceolate and gradually smaller with clasping bases. Basal leaves may be persistent (lasting through the bloom period).
Inflorescence: Single composite flower heads 1-1/2 inches across with 45 to 140 white or pale lavender rays; yellow disk florets; phyllaries with blackish hairs, glandular.
Bloom Period: July to September.
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 flagellaris USDA PLANTS Symbol ERFL
Common Name Trailing Daisy, Trailing Fleabane ITIS Taxonomic Serial No. 35865
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains to subalpine (5000 to 11800 ft.); often moist areas in meadows, open areas in grasslands and woodlands.
Plant: Biennial or short-lived perennial 10 to 16 inches tall with weak, slender stem and leafy, prostrate stolons (runners); erect stems produced initially eventually bear flowers followed by sterile runners; fertile stems are leafy only toward the base; leafy sterile stems (stolons) are long, trailing, and often rooting at the tips.
Leaves: Alternate, oblanceolate stem leaves, lower leaves on long petioles and up to 1 inch long with entire or dentate margins; smaller upper leaves are sessile, linear to narrowly oblanceolate, and hairy; basal leaves may be persistent (lasting through blooming), broadly oblanceolate to elliptic, 3/4 to 2-1/8 inches long and 1/8 to 3/8-inch wide.
Inflorescence: Small, solitary composite flower heads 3/4-inch across with many (40 to 125) white rays, blue- or pink-tinged underneath, yellow disk florets; pointed, hairy and sticky phyllaries.
Bloom Period: May to July.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel and SEINet. Plant located thanks to Jane Hendrix, Breckenridge, CO.
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 melanocephalus USDA PLANTS Symbol ERME2
Common Name Blackheaded Daisy, Blackhead Fleabane ITIS Taxonomic Serial No. 35900
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Subalpine and alpine (9300 to 14000 ft.); meadows and tundra slopes, woodlands.
Plant: Short, erect perennial 2 to 6 inches tall, often branched; hairy stem.
Leaves: Mostly basal leaves spatulate to oblanceolate, 3/4 to 2 inches long and ~1/4-inch or less wide; stem leaves linear.
Inflorescence: Single composite flower heads 1-1/2 inches across with 45 to 74 white, pinkish to purple rays; yellow disk florets; phyllaries covered with black, woolly hairs.
Bloom Period: July to September.
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


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© Tom Lebsack 2021