On bridge in hemlock gorge, About 40 ft above Charles River near dam. Air temp about 45F
By the millions on melting snow
near shore of tidal bay
Wet pine savanna. Leaves 3 cm long, entire, no teeth; 7 mm wide, 4-5x as long as wide; petioles 1 mm; leaf apex acute; branchlets forming angles greater than 45 degrees to the branch