Physaria (Nuttall ex Torrey & A. Gray) A. Gray.
A genus of about 98 herbs, of temperate North America and South America (Al-Shehbaz & O'Kane 2002). The genus is most diverse in sw. North America.
Ref: Al-Shehbaz (1987); Al-Shehbaz & O'Kane (2002); O’Kane (2010a) In Flora of North America Editorial Committee (2010); Rollins (1993); Rollins & Shaw (1973). Show full citations.
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