[Asters: The Gen Eurybia West of the Cascade Mountains of Oregon and Washington]

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster

Eurybia integrifolia

(Synonyms: Aster amplexifolius, Aster integrifolius

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

What may be thickstem aster as observed atop Big Red Mountain, Siskiyou Crest, Rogue River-Siskiyou National Forest.......July 16, 2020. I'd want to see this in full bloom to confirm this ID. It doesn't quite fit any asters I know.

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Thickstem aster as seen along the Lick Creek Trail #231, Hells Canyon National Recreation Area.......August 11, 2018.

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Sticky aster as seen along the Van Patten Lake Trail #1634, Wallowa-Whitman National Forest........July 27, 2013. This species looks similar to northern aster (Canadanthus modestus), especially in terms of the sticky purlish gland-tipped hairs on the upper stem and involucral bracts but northern aster is found in moist riparian or meadow habitats while sticky aster is found on drier upland sites.

Close-up of the inflorescence of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Stem leaf of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Basal leaf of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Close-ups of the inflorescence and stem and basal leaves of sticky aster as seen along the Van Patten Lake Trail #1634, Wallowa-Whitman National Forest........July 27, 2013.

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Flower head of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Involucre of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Flower head of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Sticky aster as seen along the Maxwell Lake Trail about one mile uphill to the west of the trailhead, Eagle Cap Wilderness..........August 3, 2016.

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius) - Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Sticky aster observed in a vernally moist swale along FS Road 3915 near the headwaters of the North Fork Twelvemile Creek, Fremont-Winema National Forest......July 31, 2020.

Stem leaves of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Stem leaves of what may be enitre-leaved aster as seen along the Canyon Mountain Trail #218, Strawberry Mountain Wilderness.........August 19, 2011. The similar showy aster (Eurybai conspicua), which has serrate leaf margins, is found at a slightly lower altitude along the access road to the trailhead.

Stem leaf of Entire-leaved Aster, Sticky Aster, Thickstem Aster, Thick-stemmed Aster: Eurybia integrifolia (Synonyms: Aster amplexifolius, Aster integrifolius)

Stem leaf of what may be enitre-leaved aster as seen along the Canyon Mountain Trail #218, Strawberry Mountain Wilderness.........August 19, 2011.

Paul Slichter