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Chaenactis douglasii
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Hoary Chaenactis
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Chaenactis douglasii
  

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About Hoary Chaenactis (Chaenactis douglasii) Chaenactis douglasii is a species of flowering plant in the daisy family known by the common name Douglas' dustymaiden. It is native to western North America from British Columbia to Saskatchewan to California to New Mexico, where it grows in a wide variety of habitats, including harsh environments such as rock fields in alpine climates and disturbed areas such as roadsides. This is a variable herb, generally a perennial. It grows erect to a maximum height near 50 or 60 centimeters, with one to many stems coated in cobwebby hairs. The woolly or hairy leaves may be up to 15 centimeters long and are divided intricately into many lobes with curled or twisted tips. The flower cluster produces one or more flower heads, each up to about 2 centimeters long. The flower head is lined with flat, hairy, blunt-pointed phyllaries and contains several white or pinkish tubular flowers with protruding anthers. The fruit is an achene about a centimeter long including its pappus of scales.
Plant Description
Plant Type
Annual herb

Max. Height
1 - 2 ft (0.3 - 0.6 m)

Form
Upright

Growth Rate
Moderate

Flower Color
White

Flowering Season
Summer
Spring
Summer
Fall
Winter


Native Status
Native

Natural Setting
Site Type
Dry open slopes

Sun
Sun

Elevation ?
195' - 12924'

Annual Precip. ?
5.7" - 158.4"

Summer Precip. ?
0.33" - 5.98"

Coldest Month ?
21.0° F - 53.9° F

Hottest Month ?
41.3° F - 79.3° F

Humidity ?
0.48 vpd - 29.29 vpd

Soil Description
Prefers sandy or loamy soils. Does not grow well in clay soils.

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Douglas' Dustymaiden, Alpine Dustymaiden


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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