Marsh.) 66-68

Smooth sumac (Rhus glabra) 137

Soft maple (Acer rubrum, L.) 140-142
(Acer saccharinum, L.), 142-144

Sorbus Americana, Marsh. _Mountain ash_ 112, 113
sambucifolia, R[oe]m. _Mountain ash_ 113, 115

Sour gum (Nyssa sylvatica, Marsh.) 159, 160

Spruce, Black, Swamp, Double, Water. (Picea nigra, Link) 12-14
Red spruce (Picea rubra, Link) 15, 16
White, Cat, Skunk, Labrador. (Picea alba, Link) 16-18

Spruce pine (Pinus Banksiana, Lamb) 8, 9

Staghorn sumac (Rhus typhina, L.) 134, 135

Striped maple (Acer Pennsylvanicum, L.) 149-151

Sugar berry (Celtis occidentalis, L.) 100-102

Sugar maple (Acer Saccharum, Marsh.) 144-146
tree (Acer Saccharum, Marsh.) 144-146

Sumac family. (=Anacardiaceae=) 134-137

Sumac, Ailanthus, Tree of Heaven, Chinese sumac
(Ailanthus glandulosus, Desf.) 133
Dogwood, poison sumac. (Rhus vernix, L.) 136, 137
Dwarf sumac (Rhus copallina) 137
Smooth sumac (Rhus glabra) 137
Staghorn sumac (Rhus tyhina, L.) 134, 135

Swamp ash (Fraxinus nigra, Marsh.) 167, 168
hickory (Carya amara, Nutt.) 55-57
maple (Acer rubrum, L.), 140-142
oak (Quercus palustris, Du Roi) 91-93
poplar (Populus heterophylla, L.) 33, 34
spruce (Picea nigra, Link) 12-14
white oak (Quercus bicolor, Willd.) 80-82

Sweet birch (Betula lenta, L.) 61, 62
gum (Liquidambar Styraciflua, L.) 108, 109
viburnum (Viburnum Lentago, L.) 168, 169

Sycamore (Platanus occidentalis, L.) 110, 111

T

Tamarack. (Larix Americana, Michx.) 2-4

Thayer, Col. Minot estate, Braintree, Mass.,
_Ilex opaca_, fine specimen 139

Thorn. Cockspur (Crataegus Crus-Galli, L.) 117, 118, 171
(Crataegus coccinea, L.) 118, 119
(Crataegus mollis, Scheele) 120, 121

Three-thorned acacia (Gleditsia tricanthus, L.) 129, 130

Thuja occidentalis, L. _Arbor-vitae, White cedar, Cedar_ 23, 24

=Tiliaceae.= (Linden family) 153-155
Tilia Americana, L. _Basswood, Linden, Lime, Whitewood_ 153-155
Europaea _Basswood, Linden, Lime, Whitewood_ 155
heterophylla, Vent. _Basswood, Linden, Lime, Whitewood_ 155
puebescens, Ait. _Basswood, Linden, Lime, Whitewood_ 155

Tree of Heaven (Ailanthus glandulosus, Desf.) 183

Tsuga Canadensis, Carr. _Hemlock_ 19, 20

Tulip tree (Liriodendron Tulipifera, L.) 104-106

Tupelo (Nyssa sylvatica, Marsh.) 159, 160

U

=Ulmaceae.=