[The Rose Family East of the Cascade Mts. of Oregon and Washington]

Bighead Horkelia, Big-headed Horkelia, Horkelia, Pink Pinwheels

Horkelia fusca ssp. capitata

Synonyms: Horkelia capitata, Horkelia fusca var. capitata

Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

The photo above shows the underside of the inflorescence of pink pinwheels (Horkelia fusca var. capitata) as seen along the Umatilla Rim Trail on the eastern edge of the North Fork Umatilla Wilderness of northeastern Oregon.........June 24, 2007.

Characteristics:

Pink pinwheels is a small perennial wildflower, with several flowering stems arising 15-60 cm from basal leaves. The stems are somewhat glandular-pubescent. The several basal leaves are compound pinnate, with 11-19 leaflets, and they measure up to 20 cm long. The leaflets may be ovate with shallow teeth, to deeply parted, depending on the variety. The stem leaves are reduced in size upwards on the stem.

The pink, 5 petaled flowers tend to be in terminal clusters. Each flower is about the size of a nickel. The calyx is usually reddish- or purplish-tinged and cup-shaped. The 5 petals are white to deep pink with pink or reddish lines. Individual petals are are obovate or triangular, with the point at attachment. The petals range from 2.5-6 mm long. There are up to 25 pistils.


Varieties of Pink Pinwheels Found East of the Cascade Mts. of Oregon and Washington:

Horkelia, Pink Pinwheels: (ssp. capitata) - Leaflets broadly ovate to obovate in shape with margins toothed or lobed less than half their length. Petals greater than 4 mm long. Herbage gray-green. Range is northwestern Idaho, the Blue Mts. of Washington and Idaho, and southward to the Steens Mt. and northeastern California and northwestern Nevada.

Tawny Horkelia: (ssp. fusca) - Leaflets typically divided half their length into narrow, linear segments. Herbage greenish in appearance, not grayish hairy. Range is Kittitas and Klickitat Counties in Washington south to Wasco County, OR.

Smallflower Horkelia, Small-flowered Horkelia: (ssp. parviflora) - Leaflets wedge-oblanceolate to wedge-obovate in shape with margins toothed or lobed less than half their length. Petals typically less than 4 mm long. Herbage gray-green above, greener below and often glandular. Found along the eastern edge of the Cascade Mts.

Littlehead Horkelia, Woolly-leaf Horkelia: (ssp. pseudocapitata) - Leaflets wedge-oblanceolate to wedge-obovate in shape with margins toothed or lobed less than half their length. Petals typically less than 4 mm long. Herbage gray-green above and below and usually not glandular. If glandular, then only slightly so. Found across much of central and eastern Oregon and south-central and south-eastern Washington.


Habitat:

Pink pinwheels are found in damp meadows, open forests, on open prairies, and on rocky slopes.


Range:

Pink pinwheels are found from central Washington south through eastern Oregon to the Sierra Nevada of California, and eastward to Idaho, western Wyoming, and Northern Nevada.


Flower of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Sepals and bracts of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Dorsal surface of a leaf of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Inflorescence of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Ventral leaf surface of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Additional close-up photos of bighead horkelia as seen along Forest Service Road #1647 at the southeastern edge of Logan Valley, Malheur National Forest.........July 3, 2010.

Close-up of the flowers of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Close-up sideview of the inflorescence of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Dorsal surface of a basal leaf of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Ventral surface of basal leaf of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Additional close-up photos of bighead horkelia as seen along Forest Service Road #1647 at the southeastern edge of Logan Valley, Malheur National Forest.........July 18, 2010.

Stem leaves and inflorescence of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Pink pinwheels (Horkelia fusca var. capitata) as seen (left and center) in Logan Valley, Malheur National Forest.........June 23, 2011. The photo at right shows pink pinwheels as seen on east-facing slopes along a fork of Rock Creek (under aspens) about a mile west of Hot Springs Campground, Hart Mt. National Antelope Refuge..........June 9, 2016.

Flowers of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)- Leaflets of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pinnately compound leaf of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

The photo above shows the pinnately compound leaf of pink pinwheels (Horkelia fusca var. capitata) as seen along the Umatilla Rim Trail on the eastern edge of the North Fork Umatilla Wilderness of northeastern Oregon.........June 24, 2007. Note the ovate shape shape of the leaflets for var. capitata. The other varieties east of the Cascades have narrower, wedge-shaped leaflets, talpering gradually to their base.

Inflorrescence of Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata) - Pink Pinwheels, Bighead Horkelia, Big-headed Horkelia, Horkelia: Horkelia fusca ssp. capitata (Synonyms: Horkelia capitata, Horkelia fusca var. capitata)

Pink pinwheels as seen in riparian forest along Bond Creek upstream of Hot Springs Campground, Hart Mt. National Antelope Refuge..........June 11, 2016.

Paul Slichter