Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 81 to >300
Comments: Perhaps the most widespread plant species on Earth, with numerous large, presumably native stands on all continents except Antarctica. In addition, at least in North America, novel (Eurasian?) genotypes have become widely established along the Atlantic Coast and in scattered inland sites where Phragmites was not previously known historically (Kristin Saltonstall, presentation to Botanical Society of Washington, 5 June 2001).