Chamerion species

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Scientific Name Chamerion angustifolium ssp. angustifolium USDA PLANTS Symbol CHANA2
Common Name Fireweed ITIS Taxonomic Serial No. 566019
Family Onagraceae (Evening Primrose) SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine (ssp. angustifolium above timberline); forest, meadows, streamsides.
Plant: Erect, multi-stemmed perennial, 18 to 48 inches tall.
Leaves: Lanceolate to elliptic, 2 to 8 inches long; alternate or the lower leaves opposite, sessile or nearly so; smooth surfaces and edges and prominent veins.
Inflorescence: Terminal racemes of numerous (more than 15) pink or magenta flowers, each about 1-inch across with 4 petals and 4 narrower, pointed sepals beneath of a similar color; prominent protruding stamens (8) with dark anthers and white 4-lobed stigma that extends beyond stamens; inconspicuous bracts are not leafy.
Bloom Period: July to September.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, "Alpine Flora of the Rocky Mountains" by Richard Scott, SW Colorado Wildflowers and SEINet.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Chamerion latifolium USDA PLANTS Symbol CHA13
Common Name Alpine Fireweed, Dwarf Fireweed ITIS Taxonomic Serial No. 510758
Family Onagraceae (Evening Primrose) Wildflower Center
Reference
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Description Life zones and habitat: Montane to alpine; gravelly, moist soils often along creeks, rocky areas, scree slopes.
Plant: Erect perennial, with single or multi-branched stems 4 to 16 inches tall.
Leaves: Thick, fleshy, grayish leaves, lanceolate to elliptic, 1/2 to 3-1/8 inches long; alternate or the lower leaves opposite, sessile or nearly so; pubescent surfaces, edges smooth or with very small teeth.
Inflorescence: Terminal racemes of a few (less than 12) pink or magenta flowers, often purple-veined, each about 1-inch across with 4 petals and 4 narrower, pointed reddish sepals beneath; prominent protruding stamens (8) with dark anthers and shorter white 4-lobed stigma; conspicuous leafy bracts beneath.
Bloom Period: July to August.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, "Alpine Flora of the Rocky Mountains" by Richard Scott, and www.americansouthwest.net.
BONAP Distribution Map

Colorado Status:
Native



© Tom Lebsack 2020