[Agoseris and Goat-chicories: The Genus Agoseris in the Cascade Mountain Range of Oregon and Washington]

Orange Agoseris, Slender Agoseris

Agoseris aurantiaca

Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum

Flower head of Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum) - Flower head of Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum)

The distinctive burnt-orange colored flower head of orange agoseris as seen at left on Strawberry Mountain, Mount Saint Helens National Volcanic Monument..........June 21, 2015. The photo at right shows the flower head of orange agoseris as seen along the Blue Lake Horse Trail #237, Mount St Helens National Volcanic Monument......August 14, 2024.

Flower head of Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum) - Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum)

Orange agoseris blooming along the Boundary Trail #1 between the Johnston Ridge Observatory and Harry's Ridge, Mount Saint Helens National Volcanic Monument..........July 2, 2014.

Flower head of Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum) - Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum)

A close-up of the flower head of orange agoseris as seen at left on Juniper Peak, Dark Divide, Gifford Pinchot National Forest.........September 13, 2014. Orange agoseris as seenat right along the Butte Camp Trail #238A about one-third of a mile below the junction with the Loowit Trail #216 in the Mount Saint Helens National Volcanic Monument.........September 19, 2014

Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum) - Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum) - Involucral bracts of Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum)

Orange agoseris blooming in moist meadows along the Howard Creek Trail #1372, Okanogan-Wenatchee National Forest......July 13, 2024.

Orange Agoseris, Slender Agoseris: Agoseris aurantiaca var. aurantiaca (Synonyms: Agoseris angustissima, Agoseris arachnoidea, Agoseris aurantiaca ssp. aurantiaca, Agoseris gracilens, Agoseris graminifolia, Agoseris greenei, Agoseris howellii, Agoseris nana, Agoseris prionophylla, Agoseris rostrata, Agoseris subalpina, Agoseris vulcanica, Troximon aurantiacum)

The burnt orange flower head of orange agoseris as seen from near Todd Lake in the Three Sisters Wilderness.

Paul Slichter