Fig. 35-39. Aments of rusty and related willows
Fig. 37. S. atrocinerea (Sand Quarry, Holbrook, 9 April 2006)
Fig. 38. S. atrocinerea (Middlesex Fells Reservation, Stoneham, 19 April 2008)
Fig. 39. S. bebbiana (Mt. Greylock Reservation, Williamstown, western Massachusetts, 12 May 2007)
Fig. 40. S. discolor (Middlesex Fells, Winchester, 4 May 2008)
Fig. 41. S. humilis (West Boylston, central Massachusetts, 8 May 2008)