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Alkali Marsh Aster Back to Plant Page
Almutaster pauciflorus

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About Alkali Marsh Aster (Almutaster pauciflorus) Almutaster is a North American genus of plants in the aster fammily containing the single species Almutaster pauciflorus (formerly Aster pauciflorus), which is known by the common name alkali marsh aster. It is native to Canada (Northwest Territories and the 3 Prairie Provinces, the western United States, and northern and central Mexico (as far south as Tlaxcala). Almutaster pauciflorus grows in wet alkaline and saline soils such as inland salt marshes and salt flats. This is a perennial herb growing a reddish-green glandular stem to heights from 30 to 120 centimeters. The narrow leaves are linear in shape and up to 10 centimeters long. The inflorescence is an open array of flower heads containing white to pale purple ray florets and a center of yellow disc florets. The head is lined with phyllaries covered in tiny white resin glands. The fruit is a hairy achene.
Plant Description
Plant Type
Perennial herb

Max. Height
1 - 3.9 ft (0.3 - 1.2 m)

Flower Color
White, Purple

Native Status

Natural Setting
Elevation ?
343' - 2594'

Annual Precip. ?
4.1" - 12.2"

Summer Precip. ?
0.51" - 0.63"

Coldest Month ?
47.4° F - 59.5° F

Hottest Month ?
75.6° F - 87.8° F

Humidity ?
4.96 vpd - 38.67 vpd

Landscaping Information
Common uses
Butterfly Gardens, Bee Gardens

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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