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Amsinckia grandiflora
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Large-flowered Fiddleneck
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Amsinckia grandiflora
  

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About Large-flowered Fiddleneck (Amsinckia grandiflora) Amsinckia grandiflora is a species of fiddleneck known by the common name large-flowered fiddleneck. This is a wildflower endemic to California and considered a Critically endangered species on the state and national level. The last remaining native populations are on the grasslands near Lawrence Livermore National Laboratory in Alameda County, California. Other populations have been established in nearby protected areas. The plant is endangered due to a number of factors, including invasive plants, grazing, and development of the valuable land. The last remaining native populations are on the grasslands near Lawrence Livermore National Laboratory in Alameda County, California. Other populations have been established in nearby protected areas. The plant is endangered due to a number of factors, including invasive plants, grazing, and development of the valuable land. This fiddleneck has low reproductive output; it produces few seeds per plant. It is also heterostylous, making the plant self-incompatible, which means individuals cannot breed with other individuals of the same morph. This often prevents reproduction. This fiddleneck is also sensitive to habitat; it grows on sedimentary loam in mesic areas of its range. The Livermore Laboratory is actively monitoring the status of this California endemic.
Plant Description
Plant Type
Annual herb

Max. Height
0.7 - 3.9 ft (0.21 - 1.2 m)

Flower Color
Yellow

Native Status
Natural Setting
Elevation ?
40' - 1548'

Annual Precip. ?
11.0" - 15.3"

Summer Precip. ?
0.23" - 0.38"

Coldest Month ?
47.9° F - 50.1° F

Hottest Month ?
69.8° F - 72.8° F

Humidity ?
1.78 vpd - 19.35 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Largeflowered Fiddleneck


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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