Aster integrifolius Nutt.
[= Eurybia integrifolia]
Annotated by W.R. Cupp.

Idaho: Lake Alturus Sawtooth Valley
Habitat: Shady, moist place near creek. Plant: Exogenous, Herb, 1 ft or more, Erect perennial, Alpine.¶Root: Rootstalk, Multiple primary, Fibrous.¶Stem: Caulis, terete, Glabrate, villous - Pubescent.¶Branches: none.¶Leaves: Cauline, Alternate, 2/5, Simple, Pinnate, Lower spatulate, upper Lanceolate, entire but stiff pubescence, Glabrate, Dark green, Deciduous.¶Petiole: On lower leaves only, winged, clasping 1 to 3 inches long.¶Stipules: Absent.¶Inflorescence: Axillary in Head, Terminal Cyrex, Convex Riceptical.¶Flower: Perfect, 1/2 line across. Involucre, Imbricate, many ranked, Tips Linear Foliacous, green. Pappus, copious and simple capillary bristles, white.¶Corolla: Valvate, Gamopetalous, Tubular, Epigynous, yellow in middle of head but the anter forming rays are Bluish Purple. ¶Stamens: Monadelphus, Epigynous, equal, 5, enclosing Pistil.¶Filaments: Capillary 2 lines long.¶Anthers: Innate, Introrse, Beaked but not Caudate at base.¶Pollen: Powdery.¶Pistils: Compound 1.¶Ovary: Closed, Inferior, 1 ovule, Erect.¶Style: Deciduous 2-lines long white, 2-cleft at Apex.¶Stigma: Lateral Linear.¶Fruit: Aggregate, dry, Achenium Sept & Oct.¶Seeds: Linear flattened, Glabrate, Capillary tufted. Phenology: Flowers & Fruits.

W.R. Cupp 57, Sep 11, 1900
CIC, Accession: 43001, Scientific: 159