Agoseris aurantiaca var. aurantiaca
Illustrator: Yevonn Wilson-Ramsey
Phenology: Flowering Jun–Sep.
Habitat: Wet meadows, bogs, muskegs, stream and lake margins, montane to alpine habitats, or ± drier sites of open forests and mountain slopes, various soils, often disturbed areas, roadsides
Elevation: 200–3600 m
Alta., B.C., N.W.T., Que., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., S.Dak., Utah, Wash., Wyo.
Variety aurantiaca is widespread in the western cordillera and is disjunct in Quebec. Two morphologic trends occur within this variety. Plants of wetter habitats represent the typical </i>var.<i> aurantiaca; those of drier habitats resemble what past authors have called Agoseris gracilens (including A. gracilens </i>var.<i> greenei). There is a weak geographic trend to this variation, with the aurantiaca phase occurring mostly along the Rocky Mountains axis and the gracilens phase mostly along the Cascade Mountains-Sierra Nevada axis. In their extremes they appear distinct, but their intergradation is so complete that separation becomes arbitrary. Putative hybrids between </i>var.<i> aurantiaca and A. glauca, A. grandiflora, A. monticola, and A. parviflora have been collected.
Corolla color in </i>var.<i> aurantiaca is variable but most commonly orange. Pink-flowered forms occur sporadically. They have been recognized as Agoseris lackschewitzii. Recognition of pink forms is unmerited; if it were, the older name A. carnea would have priority.