(Lehm.) A. Nelson & J.F. Macbr.
Amsinckia micrantha Suksd.
The plant has two varieties:
- Amsinckia menziesii var. intermedia - common fiddleneck, intermediate fiddleneck
- Amsinckia menziesii var. menziesii - Menzies' fiddleneck
Amsinckia menziesii var. intermedia (common fiddleneck, or intermediate fiddleneck) is one of the common fiddlenecks of western North America, distributed from Alaska and Canada through the Western United States to Mexico. Like other members of the genus, it has a terminal flowering whorl somewhat shaped like the head of a violin or fiddle, hence the name fiddleneck. The flowers are yellow-orange, orange, or dark yellow.
In Australia, the species has become a common weed of cultivated areas in New South Wales, Victoria and Queensland. In the British Isles, it is an introduced species naturalised particularly in the east of the country and recorded in the wild since 1910. 
- Wilson, Peter G. "Amsinckia intermedia Fisch. & C.A.Mey.". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 2008-11-01.
- "Amsinckia micrantha". Biological Records Centre and Botanical Society of Britain and Ireland. Retrieved 7 August 2016.
- "BSBI Distribution map Amsinckia micrantha". Botanical Society of Britain and Ireland (BSBI). Retrieved 7 August 2016.
- Davis, Jeff N. (June 2001). "A Closer Look: Lawrence's Goldfinch". Birding. American Birding Association. 33 (3): 212–221.
- Jepson Manual treatment - Amsinckia menziesii
- USDA: NRCS Plants Profile Amsinckia menziesii var. intermedia
- Images at CalPhotos
- CalFlora Database: Amsinckia menziesii (Menzies' fiddleneck, Small flowered fiddleneck)
- Jepson Manual eFlora (TJM2) treatment of Amsinckia menziesii[permanent dead link]
- USDA Plants Profile for Amsinckia menziesii (Menzies' fiddleneck)
- Amsinckia menziesii in the CalPhotos Photo Database, University of California, Berkeley
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