Lots and lots of Dwarf Sand-cherry was sprawling across the sand amid the rocks, its low-lying branches well adapted to being pressed down every winter by up to 10 feet of deposited "frazil" ice, a particular kind of ice that forms in fast-moving water. Those heavy deposits of ice take a long, long time to melt, retarding the growing season along these shores. I was really surprised to find Wood Anemone still in bloom (a plant long gone to seed in Saratoga now), although with the chilly rain today, the white blooms retreated into the shelter of their pretty pink sepals.
I was going to chuck this photo, but changed my mind because it reveals so well the effect of all that ice piling up on the shore each winter. See how abruptly the shrubbery comes to an end? Any tree or shrub that would venture out into the ice build-up zone -- what are called the Ice Meadows -- would promptly be pressed to death or else only survive in miniaturized forms that cast little shade. Even those alien aggressors that tend to usurp other habitats can't get a foothold here, leaving the land to those native plants that have evolved to cope with these harsh conditions.