[Fireweeds: The Genus Chamaenerion in the Cascade Mountains of Oregon and Washington]

Fireweed, Great Willow-herb

Chamaenerion angustifolium

Synonyms:Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion angustifolium var. canescens, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum

Fireweed, Great Willow-herb: Chamaenerion angustifolium  (Synonyms:Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion angustifolium var. canescens, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

Fireweed, Great Willow-herb: Chamaenerion angustifolium  (Synonyms:Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion angustifolium var. canescens, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum) - Fireweed, Great Willow-herb: Chamaenerion angustifolium  (Synonyms:Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion angustifolium var. canescens, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

Fireweed as seen along Forest Road #39 at Bottle Springs, Okanogan-Wenatchee National Forest.......July 29, 2018.

Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

Fireweed blooming on the Pumice Plain, Mount Saint Helens National Monument..........July 26, 2015.

Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows a close-up of the flowers of fireweed as seen at the base of the north side of Little Mt. Adams.........August 8, 2004.

Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows the general form of fireweed as seen along road #2329 at the East Fork Adams Creek on the northern slopes of Mt. Adams..........August 6, 2005.

Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum) - Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

Additional images of fireweed. The photo at left was photographed along the Island Springs Trail while that at right was photographed from Little Mount Adams..........August 13, 2012.

Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows fireweed as seen at the base of the north side of Little Mt. Adams..........August 8, 2004.

Flowers of Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows a close-up view of the flowers of fireweed as seen at about 4050' along a logging road atop the ridge dividing the Cougar and Dairy Creek drainages at the southeastern corner of Mt. Adams........July 10, 2005. Note the long white style with a 4-part stigma, with the stigma lobes coiled.

Close-up sideview of a flower of Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows a close-up side-view of the flower of fireweed as seen at about 4050' along a logging road atop the ridge dividing the Cougar and Dairy Creek drainages at the southeastern corner of Mt. Adams........July 10, 2005.

Stem leaf of Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows a stem leaf of fireweed as seen along Shorthorn Creek at about 5600' along the Shorthorn Trail #16 on the southern slopes of Mt. Adams........July 30, 2005. The leaves of this species are numerous and alternate along the stem.

Sepals of Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows a close-up view of the narrow sepals and broad petals of fireweed as seen at about 4050' along a logging road atop the ridge dividing the Cougar and Dairy Creek drainages at the southeastern corner of Mt. Adams.........July 10, 2005.

Cylindrical fruit of Fireweed, Great Willow-herb: Chamerion angustifolium var. canescens (Synonyms: Chamaenerion angustifolium, Chamerion angustifolium ssp. angustifolium, Chamerion angustifolium ssp. circumvagum, Chamerion angustifolium var. angustifolium, Chamerion danielsii, Chamerion platyphyllum, Chamerion spicatum, Epilobium angustifolium, Epilobium angustifolium ssp. circumvagum, Epilobium angustifolium ssp. macrophyllum, Epilobium angustifolium var. abbreviatum, Epilobium angustifolium var. canescens, Epilobium angustifolium var. intermedium, Epilobium angustifolium var. macrophyllum, Epilobium angustifolium var. platyphyllum, Epilobium spicatum)

The photo above shows the long, linear fruit of fireweed as seen along road #23 at the Mt. Adams viewpoint at the southwestern corner of Mt. Adams.........August 6, 2005.

Paul Slichter