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Shasta Chaenactis Back to Plant Page
Chaenactis suffrutescens

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About Shasta Chaenactis (Chaenactis suffrutescens) Chaenactis suffrutescens is a species of flowering plant in the aster family known by the common name Shasta chaenactis. It is native to California, where it is known only from Shasta and Trinity Counties in the far northern part of the state, and also to Oregon, where it has been found in Josephine County. It grows in coniferous forests and other habitat in the Klamath Mountains and the southernmost Cascade Range mountains, sometimes on serpentine soils. Chaenactis suffrutescens is a spreading subshrub producing several branching erect stems reaching up to about 50 cm (20 inches) tall. The leaves are several centimeters long and divided into several lobes which are subdivided into smaller lobes. The leaves are coated in feltlike white woolly fibers. The inflorescence is a cylindrical flower head atop an erect, stout peduncle. Each head is lined with glandular, hairy phyllaries and contains several white or pink-tinged disc florets with protruding anthers. The disc florets have ray-like lobes on their corollas, but there are no true ray florets. The fruit is an achene over a centimeter long including the pappus of scales.
Plant Description
Plant Type
Perennial herb

Max. Height
1.6 ft (0.49 m)

Flower Color

Native Status
Natural Setting
Elevation ?
2151' - 14092'

Annual Precip. ?
14.4" - 90.2"

Summer Precip. ?
0.98" - 4.09"

Coldest Month ?
9.0° F - 43.5° F

Hottest Month ?
32.7° F - 68.5° F

Humidity ?
1.20 vpd - 20.63 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

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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