|Section:||P. sect. Californicum
Papaver californicum is a species of poppy known by the common names fire poppy and western poppy.
It is endemic to California, where it is found in Central Western California and Southwestern California.  It grows in chaparral, oak woodlands, and other habitats, often in places that have recently burned.
Papaver californicum is an annual herb that grows a hairy to hairless stem which may exceed half a meter in height.
The flower atop the mostly naked stem usually has four petals one or two centimeters long that are orange in color with green bases. Petals of the similar wind poppy (Stylomecon heterophylla) have purple bases.
- Beidleman, Linda, and Eugene Kozloff. Plants of the San Francisco Bay Region: Mendocino to Monterey, Revised Edition. 1st ed. University of California Press, 2003. Print.
- James C. Carolan; Ingrid L. I. Hook; Mark W. Chase; Joachim W. Kadereit; Trevor R. Hodkinson (2006). "Phylogenetics of Papaver and related genera based on DNA sequences from ITS nuclear ribosomal DNA and plastid trnL intron and trnL–F intergenic spacers". Annals of Botany. 98 (1): 141–155. doi:10.1093/aob/mcl079. PMC . PMID 16675606.
- Jepson Manual Treatment: Papaver californicum
- USDA Plants Profile: Papaver californicum
- Flora of North America
- Papaver californicum — U.C. Photo gallery
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