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Erigeron biolettii

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About Streamside Daisy (Erigeron biolettii) Erigeron biolettii is a species of flowering plant in the aster family known by the common names streamside daisy and Bioletti's fleabane. It was named for University of California Professor of Viticulture and Enology Frederick Bioletti when he was an undergraduate. It is endemic to California, where it is known only from the North Coast Ranges from Marin and Solano Counties north to Humboldt County. There is a report of the species growing in Alameda County, but it is from an urban area in Crestmont, hence probably either a cultivated specimen or an escaped introduction. Erigeron biolettii is a perennial herb producing a branching erect stem up to 90 centimeters (3 feet) tall. It is hairy and very glandular. The inflorescence is a loose array of as many as 15 flower heads at the tips of long, thin branches. Each head is lined with layers of densely glandular purple-tipped phyllaries and contains many yellow disc florets but no ray florets. The fruit is an achene with a pappus of bristles.
Plant Description
Plant Type
Perennial herb

Max. Height
3 ft (0.9 m)

Flower Color

Native Status
Natural Setting
Elevation ?
24' - 2965'

Annual Precip. ?
20.6" - 81.8"

Summer Precip. ?
0.23" - 1.51"

Coldest Month ?
40.4° F - 48.6° F

Hottest Month ?
61.5° F - 75.4° F

Humidity ?
0.36 vpd - 22.53 vpd

Landscaping Information
Common uses
Bee Gardens

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Bioletti's Fleabane

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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