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Berteroa incana
''Berteroa incana'' is a species of flowering plant in the mustard family, Brassicaceae. Its common names include hoary alyssum, false hoary madwort, hoary berteroa,〔Jacobs, J. and J. Mangold. (''Berteroa incana'' Plant Fact Sheet. ) USDA NRCS Bozeman. December 2008.〕 and hoary alison.〔(''Berteroa incana''. ) Germplasm Resources Information Network (GRIN).〕〔Karran, A. B. and T. C. G. Rich. (2003). (Geographical and temporal distributions of ''Alyssum alyssoides'' and ''Berteroa incana'' (Brassicaceae) in the British Isles and the relationship to their modes of introduction. ) ''Watsonia'' 24(4), 499-506.〕 It is native to Eurasia and it has been introduced to western Europe and North America.〔〔 It is an invasive noxious weed in some areas.〔〔
==Description==
This species has been described as a biennial herb,〔(''Berteroa incana''. ) In: Klinkenberg, B. (Ed.) 2013. E-Flora BC: Electronic Atlas of the Plants of British Columbia. University of British Columbia.〕 and as an annual to short-lived perennial.〔 It is hairy, with flattened star-shaped and simple hairs. It produces one or more upright stems usually 30 to 80 centimeters tall, sometimes exceeding one meter. The basal leaves are up to 8 to 10 centimeters long.〔(''Berteroa incana''. ) Flora of North America.〕 The leaves are hairy and grayish.〔 The inflorescence is a dense raceme of flowers. The four white petals are roughly half a centimeter long and are tipped with two lobes. The fruit is a hairy silicle up to a centimeter long.〔
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