[Members of the Sunflower Family with Button-like Flower Heads]

Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow

Chaenactis douglasii var. douglasii

Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis

Involucral bracts of Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis)

The photo above shows the involucral bracts of hoary flase yarrow as seen from the Columbia Hills to the northeast of The Dalles, OR............July 7, 2006.

Seed head of Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis)The photo at right shows the seed head of the hoary false yarrow.
Characteristics:

Hoary false yarrow is an upright wildflower with cottony, lacy pinnate leaves. The one to several stems are erect, relatively straight, and often unbranched. Plants arise 10-60 cm in height. The leaves are bipinnate to pinnately dissected (See photo below). The leaf segments are thick and curled, so the leaves do not look flat.

The inflorescence is a flat-topped corymb. There are several to many white or pink-tinged disk flowers which look like pincushions. Individual plants grow up to 1.5 feet tall. Flowers from May into September.


Habitat:

Hoary false yarrow may be found on dry, rocky or sandy soils from the lowlands to timberline in the mountains.


Range:

Hoary false yarrow may be found from southern British Columbia to southern California, east of the Cascade and Sierra Nevada ranges, east to Colorado and northern Arizona.

In the Columbia River Gorge, it is found east of Bingen, WA at altitudes between 100'-2400'.


Flower head of Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis)

The photo above shows a close-up of the disk flowers of hoary false yarrow as seen in the Columbia Hills..........July 7, 2006.

Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis) - Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis)

Hoary false yarrow as seen on a bald near Klickitat Breaks Road in the Klickitat Wildlife Area...........June 30, 2014.

Basal leaves of Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis) - Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis) - Douglas' Dustymaiden, Dustymaidens, Hoary False Yarrow: Chaenactis douglasii var. douglasii (Synonyms: Chaenactis douglasii var. achilleaefolia, Chaenactis douglasii var. montana, Chaenactis rubricaulis)

The photo above left shows the attractive rosette of basal leaves of hoary false yarrow as seen in the Columbia Hills................July 7, 2006. The photo at centert was taken at the same location...........January 19, 2015. The photo at right shows the basal leaf rosette as seen on open slopes along Stacker Butte Road at Columbia Hills Natural Area Preserve.........February 2, 2016. The plant at top is a first year plant, while the bottom rosette is from a second year plant that will flower this spring.

Paul Slichter