Polygonum aviculare ssp. neglectum — narrow-leaved common knotweed — distribution by town in Massachusetts

Legend
— town in which taxon has been recorded only recently (in or after 1980)
— both recent and historic records
— only historic records (dated prior to 1980)
— doubtful or erroneous record
Sources
Records retrieved from CNH Portal, NHESP town records for rare plants, generic records (e.g., observations listed in the county floras), and salicicola photo records. Click on any town marker to see source(s) of pertaining record(s) coded as [CNH], [generic], [photo], or [NHESP]. In the list below, exclamation sign ('!') appended to years for verified records, and question mark ('?') for unverified.
Records Sorted by Category
Only Historic
  1. MA — Essex — Gloucester [ 1897 ]
  2. MA — Middlesex — Concord [ 1967 ]
  3. MA — Middlesex — Reading [ 1881 ]
  4. MA — Middlesex — Sherborn [ 1912 ]
  5. MA — Middlesex — Wakefield [ 1915 ]
  6. MA — Suffolk — Boston [ 1917 0 1853 ]
  7. MA — Norfolk — Stoughton [ 1964 ]
  8. MA — Dukes — Oak Bluffs [ 1916 1916 1916 1916 1916 ]
  9. MA — Nantucket — Nantucket [ 1912 1899 ]
  10. MA — Royalston [ 0 ]
  11. MA — Worcester — Worcester [ 1879 ]
  12. MA — Hampshire — Amherst [ 1873 ]
  13. MA — Berkshire — Sheffield [ 1915 1902 ]
  14. MA — Essex — Beverly [ 1902 ]
  15. MA — Middlesex — Malden [ 1853 ]
  16. MA — Boston [ 1907 ]
  17. MA — Barnstable — Dennis [ 1919 ]
Historic and Recent
  1. MA — Franklin — Sunderland [ 1965 1928 2011 ] Verified: [ ? ? ? ]
  2. MA — Franklin — Deerfield [ 2012 1973 ] Verified: [ ? ? ]
Only Recent
  1. MA — Franklin — Whately [ 2011 ] Verified: [ ? ]
  2. MA — Franklin — Montague [ 2011 ] Verified: [ ? ]
  3. MA — Worcester — Spencer [ 2008 ] Verified: [ ? ]
  4. MA — Franklin — Conway [ 2012 ] Verified: [ ? ]
  5. MA — Dukes — Edgartown [ 2016 2016 2016 ] Verified: [ ? ? ? ]
  6. MA — Dukes — Chilmark [ 2017 ] Verified: [ ? ]
  7. MA — Edgartown [ 2016 ] Verified: [ ? ]
  8. MA — Randolph [ 2023 2023 2023 2023 2023 2023 2023 2023 ] Verified: [ ? ? ? ? ? ? ? ? ]
Unable to Map
(town name missing or non-standard or locality outside New England)
Generated Aug. 23, 2024, 8:29 p.m. (America/New_York)