Monitoring the Spread of Fumaria muralis in the US

It's interesting to watch the spread of this introduced species in the United States. The first occurrence was posted to iNaturalist in April 2012 from Moss Landing, CA. Since then, the number of reported observations has grown exponentially. It can now be found throughout California and 9 other states.

It started appearing on the West Coast, then several years later it was found along the southern coastline in Florida, Alabama, Mississippi, Louisiana, and Texas.