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.= (Elm family) 95-102 Celtis occidentalis, L. _Hackberry_, _Nettle tree_, _Hoop ash_, _Sugar berry_ 100-102 Ulmus Americana, L. _American_, _White elm_ 95-97 fulva, Michx. _Slippery_, _Red elm_ 97, 98 puebescens, Walt. _Slippery_, _Red elm_ 97, 98 racemosa, Thomas. _Cork_, _Rock elm_ 99, 100 V Viburnum Lentago, L. _Sheep berry_ 168, 169 W Walnut family. (=Juglandaceae=) 47-57 Walnut, Black walnut (Juglans nigra, L.) 48, 49 Butternut, Oilnut, Lemon walnut. (Juglans cinerea, L.) 46, 47 Mockernut, White-heart hickory. (Carya tomentosa, Nutt.) 51-53 Walnut, Shagbark, Shellbark hickory. (Carya alba, Nutt.) 49-51 Water beech (Carpinus Caroliniana, Walt.) 59, 60 oak (Quercus palustris, Du Roi) 91-93 spruce (Picea nigra, Link) 12-14