[Members of the Sunflower Family with Flower Heads like Sunflowers or Daisies]

Columbia River Daisy, Hall's Columbiadoria, Hall's Goldenweed

Columbiadoria hallii

Synonyms: Haplopappus hallii, Hesperodoria hallii

Hall's goldenweed as seen at the western trailhead to the Twin Tunnels Trail about one mile west of Hood River, OR........October 13, 2010.

Photo at right of Columbiadoria hallii from Tom McCall Nature Preserve in the Columbia RiverGorge ......... 8/26/2001.

Characteristics:

Hall's goldenweed is a much branched perennial with a woody base and annual branches found primarily in the Columbi River Gorge. The stems and leaves are rough to somewhat smooth throughout with resinous involucral bracts. The lower leaves are reduced in size and often have begun to drop by flowering time. The middle and uper leaves are only gradually reduced in size. Individual leaves are oblanceolate to linear-oblong or oblong-lanceolate in shape. They range from 2-5 cm long and 3-11 mm wide. The leaves are also firm to the touch and are generally ascending to erect in their arrangement along the stems.

The flower heads are densely to loosely arranged at the ends of the stems. The involucre is 8-11 mm high with shingin, resinous bracts, the bracts arranged like very narrow shingles in a series of several rows. The bracts have short green tips. The 5-8 rays are yellow in color and range from 5-8 mm long. Plants flower from mid August into October.

Stem leaf of Columbia River Daisy, Hall's Columbiadoria, Hall's Goldenweed: Columbiadoria hallii (Synonyms: Haplopappus hallii, Hesperodoria hallii)

Mid stem leaf of Hall's goldenweed.

Habitat:

Hall's goldenweed may be found on dry open to lightly wooded slopes overlooking the Columbia River.

Range:

Hall's goldenweed may be found between the elevations of 100'-4000' from near Mount Hamilton eastward to Bigg's Junction, OR. It has also been reported from the Calapooia Mts. of Oregon.

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Hall's goldenweed blooming along the Mosier Plateau Trail uphill to the east of Mosier, OR..........October 6, 2017.

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Hall's goldenweed as seen at the western trailhead to the Twin Tunnels Trail about one mile west of Hood River, OR...........October 13, 2010.

Seed heads of Hall's goldenweed as seen at left on slopes west and above Eightmile Creek in the northwest corner of the Columbia Hills State Park..........October 18, 2015. A few plants still were blooming at this date at this location. The photo at right shows the dried stems of the previous fall's growth of Hall's goldenweed as seen on USFS lands on Sevenmile Hill.....February 21, 2020.

Paul Slichter