Hirschfeldia incana (formerly Brassica geniculata) is a species of flowering plant in the mustard family known by many common names, including shortpod mustard, buchanweed, hoary mustard and Mediterranean mustard. It is the only species in the monotypic genus Hirschfeldia, which is closely related to Brassica. The species is native to the Mediterranean Basin but it can be found in many parts of the world as an introduced species and often a very abundant noxious weed. This mustard is very similar in appearance to black mustard, but is generally shorter. It forms a wide basal rosette of lobed leaves which lie flat on the ground, and it keeps its leaves while flowering. Its stem and foliage have soft white hairs. Unlike black mustard, H. incana is a perennial plant.
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
- "Hirschfeldia incana". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 12 January 2018.
- Warwick, S., et al. Guide to Wild Germplasm of Brassica and Allied Crops (tribe Brassiceae, Brassicaceae). 2nd Edition. Agriculture & Agri-Food Canada.
- PIER Weeds of the Pacific.
- Identification: B. nigra v. H. incana
- Jepson Manual Treatment
- PFAF Hirschfeldia incana
- Media related to Hirschfeldia at Wikimedia Commons
- USDA Plants Profile
- Photo gallery
- Hirschfeldia incana Israel Wildflowers
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