Polygonum tenue — slender 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 — Middlesex — Woburn [ 1935 1935 1935 1935 1935 1935 1913 1935 1935 1935 1935 1935 1935 ]
  2. MA — Plymouth — Hingham [ 1942 1913 ]
  3. MA — Middlesex — Melrose [ 1878 1878 0 ]
  4. MA — Suffolk — Boston [ 1896 1902 1896 1896 1896 1883 1888 1892 1896 1906 ]
  5. MA — Norfolk — Canton [ 1903 ]
  6. MA — Norfolk — Milton [ 1884 1884 1884 None ]
  7. MA — Middlesex — Winchester [ 1913 1938 1911 1924 1915 ]
  8. MA — Franklin — Deerfield [ 1979 1979 1954 1954 1979 1979 1954 ]
  9. MA — Essex — Danvers [ 1854 1854 1847 ]
  10. MA — Middlesex — Bedford [ 1880 ]
  11. MA — Middlesex — Weston [ 1894 1894 1895 ]
  12. MA — Worcester — Berlin [ 1944 ]
  13. MA — Middlesex — Cambridge [ 1891 0 ]
  14. MA — Middlesex — Chelmsford [ 1902 ]
  15. MA — Middlesex — Concord [ 0 1834 ]
  16. MA — Middlesex — Lincoln [ 1888 ]
  17. MA — Middlesex — Medford [ 1866 1853 ]
  18. MA — Middlesex — Arlington [ 1869 ]
  19. MA — Middlesex — Natick [ 1913 ]
  20. MA — Middlesex — Sherborn [ 1914 1914 ]
  21. MA — Suffolk — Norfolk [ 1896 1896 1896 1902 ]
  22. MA — Norfolk — Quincy [ 1894 ]
  23. MA — Norfolk — Dedham [ 1883 ]
  24. MA — Hampden — Wilbraham [ None 1888 ]
  25. MA — Hampshire — Northampton [ 1952 ]
  26. MA — Hampden — Springfield [ 1926 1926 ]
  27. MA — Franklin — Greenfield [ 1978 ]
  28. MA — Essex — Lynn [ 1879 ]
  29. MA — Hampshire — Belchertown [ 1927 ]
Historic and Recent
  1. MA — Middlesex — Malden [ 2008 1878 1886 ] Verified: [ ? ? ? ]
  2. MA — Hampden — Holyoke [ 1995 1979 None 1998 ] Verified: [ ? ? ? ? ]
  3. MA — Hampshire — Amherst [ 2004 1927 ] Verified: [ ? ? ]
  4. MA — Hampshire — South Hadley [ 1925 1881 1994 1875 ] Verified: [ ? ? ? ? ]
  5. MA — Franklin — Sunderland [ 1922 2016 ] Verified: [ ? ? ]
Only Recent
  1. MA — Hampden — West Springfield [ 2004 ] Verified: [ ? ]
  2. MA — Hingham [ 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2012 2012 ] Verified: [ ? ? ? ? ? ? ? ? ? ? ? ? ]
Unable to Map
(town name missing or non-standard or locality outside New England)
Generated May 12, 2024, 1:32 p.m. (America/New_York)