[Members of the Sunflower Family with Button-like Flower Heads in the Columbia River Gorge of Oregon and Washington]

Columbia Goldenweed, Large-flowered Goldenweed, Rayless Goldenweed

Pyrrocoma carthamoides var. carthamoides

Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides

Flower head of Columbia Goldenweed, Large-flowered Goldenweed, Rayless Goldenweed: Pyrrocoma carthamoides var. carthamoides (Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides)

The photo above shows a close-up view of the flower head of large-flowered goldenweed as seen from the Columbia Hills...............July 7, 2006.

Characteristics:

Large-flowered goldenweed is a prostrate, perennial wildflower with one to several stems, large oblanceolate leaves, and wide flower heads surrounded by widely triangular bracts. The stems range from 5-60 cm in length. The basal leaves are tufted, spiny-toothed to entire, and generally 5-40 cm long and 5-40 mm wide. The stems may sometimes be very leafy, or instead, may show a reduction of leaf size and number up the stem.

The flower heads are solitary, yellow, and have both disk and ray flowers. The 0-30 ray flowers may not be readily noticeable, and may measure up to 7 mm long. The very numerous disk flowers range from 10-14 mm long. Blooms from late June into early August.


Habitat:

Large-flowered goldenweed is found on rocky flats and open, rocky or graveled slopes, often with sagebrush or in forest openings.


Range:

Large-flowered goldenweed is found mostly east of the Cascade summits of Washington and Oregon, to northwest Montana, central and southwest Idaho, and northeast Nevada.

In the Columbia River Gorge, it is found between the elevations of 400'-3000' near Hood River, OR and hence east.


Columbia Goldenweed, Large-flowered Goldenweed, Rayless Goldenweed: Pyrrocoma carthamoides var. carthamoides (Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides)

Columbia goldenweed blooming near Klickitat Breaks Road in the Klickitat Wildlife Area..........June 30, 2014.

Involucral bracts and upper stem leaf of Columbia Goldenweed, Large-flowered Goldenweed, Rayless Goldenweed: Pyrrocoma carthamoides var. carthamoides (Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides)

The photo above shows a close-up of the large, ovate-shaped involucral bracts of large-flowered goldenweed. Photographed in the Columbia Hills..........July 7, 2006.

Upper stem leaves of Columbia Goldenweed, Large-flowered Goldenweed, Rayless Goldenweed: Pyrrocoma carthamoides var. carthamoides (Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides)

The photo above shows a close-up of the rough, glaucous stem leaves of large-flowered goldenweed as seen in the Columbia Hills........July 7, 2006.

A seed head of Columbia Goldenweed, Large-flowered Goldenweed, Rayless Goldenweed: Pyrrocoma carthamoides var. carthamoides (Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides)

A close-up of a seed head of large-flowered goldenweed as seen along trails above the Crawford Oaks trailhead, Columbia Hills State Park.........October 2, 2016.

Paul Slichter