Fig. 51. Rusty willow growing as a shrub in the wetland (Cutler Park, Charles River floodplain, Needham, 1 November 2007).

Fig. 53. Rusty willow growing as a tree (Mother Brook, Boston, 19 April 2006)

Fig. 54. A sapling of rusty willow (Mary Dunn Pond, Hyannis, 31 October 2006)

Fig. 55. Seedlings of rusty willow (Weymouth Great Pond, Weymouth, 23 October 2007)

Fig. 56. An old prostrate cut-back trunk, whose ascending branches acquired a tree habit. Progeny of different ages surrounds this mother-tree. (Houghton's Pond, Blue Hills Reservation, Milton¹, 23 August 2006)

Fig. 57. Retained dry leaves on rusty willow (Weymouth, 25 December 2007)

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¹ A hundred years ago Houghton's Pond was known to be a refuge for a variety of native species, very few of which have survived there until now. Rusty willows are scattered along the entire perimeter of the pond.