Didymosphenia geminata

March 16, Sucker Brook / Branbury.  Didymo filaments 
March 16, Sucker Brook / Branbury.   Individual Didymo cell.
March 16, Sucker Brook, Didymo growth on rock
April 10, Middlebury River E Middlebury / Grist Mill bridge
May 31, Baldwin Creek upstream of Rt 116.  Didymo cells attached to filaments.
Oct 30 , Baldwin Creek upstream of Rt 116.   Didymo completely absent where if was abundant earlier in the season.