INDEX TO PART III.

• Abele-tree, 168.
• Abies, 183-187.
• Acanthopanax, 110.
• Acer, 84-88.
• Acuminate-leaved Clethra, 117.
• Æsculus, 81-83.
• African Cedar, 190.
• Ailanthus, 76.
• Albizzia, 96.
• Alcock's Spruce, 181.
• Alder, 147, 148.
• Alleghany Plum, 98.
• Alnus, 147, 148.
• Alternate-leaved Cornel, 112.
• Amelanchier, 107.
• Anacardiaceæ, 89.
• Angelica-tree, 109.
• Angiospermæ, 62.
• Anonaceæ, 68.
• Apple, 101.
• Aralia, 109, 110.
• Araliaceæ, 109.
• Araucaria, 190.
• Arbor-vitæ, American, 194.
  • Chinese, 194.
  • Eastern, 194.
  • Giant, 194.
  • Hatchet-leaved, 194.
  • Japanese, 196.
  • Weeping, 195.
• Arrow-wood, 114.
• Ash, Black, 124.
  • Blue, 124.
  • European, 124.
  • Flowering, 125.
  • Green, 123.
  • Red, 123.
  • Water, 124.
  • Weeping, 125.
  • White, 123.
• Ash-colored Willow, 167.
• Ash-leaved Maple, 89.
• Asimina, 68.
• Aspen, 168.
• Austrian Pine, 175.

• Baccharis, 115.
• Bald Cypress, 192.
• Balm of Gilead, 170.
• Balsam-fir, 183, 184.
• Balsam-poplar, 170.
• Barren Oak, 158.
• Bartram's Oak, 152.
• Basket-oak, 154.
• Basswood, 72, 73.
• Bay, Red, 130.
• Bay Willow, 164, 165.
• Beaked Hazelnut, 149.
• Beaked Willow, 166.
• Bean-trefoil Tree, 92.
• Bear Scrub Oak, 157.
• Beech, American, 161.
  • Blue, 151.
  • Cut-leaved, 161.
  • European, 161.
  • Purple, 161.
  • Silver Variegated, 161.
  • Water, 151.
• Benjamin-bush, 131.
• Betula, 144-147.
• Bhotan Pine, 172.
• Bignoniaceæ, 127.
• Bignonia Family, 127.
• Big Shellbark, 142.
• Big Tree of California, 192.
• Bilsted, 108.
• Biota, 193.
• Birch, American White, 145.
  • Black, 146.
  • Canoe, 145.
  • Cherry, 146.
  • Cut-leaved, 146.
  • European White, 146.
  • Gray, 145, 146.
  • Hairy-leaved, 146.
  • Paper, 145.
  • Purple-leaved, 146.
  • Pyramidal, 146.
  • Red, 147.
  • River, 147.
  • Sweet, 146.
  • Weeping, 146.
  • Yellow, 146.
• Bird-cherry, 99, 100.
• Bitternut, 143.
• Bixineæ, 67.
• Black Ash, 124.
  • Birch, 146.
  • Cherry, 99.
  • Gum, 112.
  • Haw, 114.
  • Hawthorn, 106.
  • Oak, 156, 158.
  • Pine, 175.
  • Poplar, 170.
  • Scrub Oak, 157.
  • Spruce, 179.
  • Sugar-maple, 86.
  • Walnut, 141.
  • Willow, 163.
• Blackthorn, 98.
• Blue Ash, 124.
  • Beech, 151.
• Bog Willow, 166.
• Bow-wood, 137.
• Box Elder, 89.
  • White Oak, 153.
• Boxwood, 133.
• Bristly Locust, 94.
• Brittle Willow, 163.
• Broom-hickory, 143.
• Buckeye, 82, 83.
• Buckthorn, California, 80.
  • Carolina, 79.
  • Common, 79.
  • Southern, 119.
  • Woolly-leaved, 118.
• Buckthorn Family, 79.
• Buffalo-berry, 132.
• Bullace Plum, 98.
• Bumelia, 118, 119.
• Burning-bush, 78.
• Bur-Oak, 153.
• Butternut, 140.
• Buttonwood, 139.
• Buxus, 132, 133.

• Calico-bush, 116.
• California Buckthorn, 80.
  • Maple, 86.
• Camellia Family, 69.
• Canoe Birch, 145.
• Caprifoliaceæ, 113.
• Caragana, 92.
• Carolina Buckthorn, 79.
  • Poplar, 169.
• Carpinus, 150, 151.
• Carya, 141-144.
• Cashew Family, 89.
• Castanea, 159, 160.
• Catalpa, 128, 129.
• Caucasian Planer-tree, 136.
• Cedar, African, 190.
  • Deodar, 190.
  • Indian, 190.
  • Japan, 198.
  • Lebanon, 189.
  • Mt. Atlas, 190.
  • Red, 199.
  • Silver, 190.
  • White, 194, 195.
• Cedrela, 76.
• Cedrus, 189, 190.
• Celastraceæ, 78.
• Celtis, 136, 137.
• Cembra Pine, 173.
• Cephalonian Silver Fir, 185.
• Cephalotaxus, 200.
• Cercidiphyllum, 67.
• Cercis, 94.
• Chaste-tree, 130.
• Cherry, 99, 100.
• Cherry Birch, 146.
• Cherry, Cornelian, 111.
• Chestnut, 160.
• Chestnut-oak, 154, 155.
• Chickasaw Plum, 98.
• Chile Pine, 190.
• China-tree, 75.
• Chinese Arbor-vitæ, 194.
  • Cedrela, 76.
  • Cork-tree, 74.
  • Honey-locust, 96.
  • Parasol, 72.
  • Sumac, 91.
  • White Magnolia, 65.
• Chinquapin, 160.
• Chionanthus, 126.
• Choke-cherry, 100.
• Cilician Silver Fir, 186.
• Cladrastis, 93.
• Clammy Locust, 94.
• Clerodendron, 129.
• Clethra, 117, 118.
• Club, Hercules', 109.
• Cockspur Thorn, 104.
• Coffee-tree, Kentucky, 95.
• Colchicum-leaved Maple, 87.
• Compositæ, 115.
• Coniferæ, 170.
• Cork-bark Maple, 87.
• Cork Elm, 134.
• Cork-tree, Chinese, 74.
• Cornaceæ, 110.
• Cornel, 111, 112.
• Cornelian Cherry, 111.
• Cornus, 110-112.
• Corsican Pine, 175.
• Corylus, 149.
• Cottonwood, 169.
• Cow-oak, 154.
• Crab-apple, 101.
• Crack-willow, 163.
• Cranberry-tree, 114.
• Crape-myrtle, 109.
• Cratægus, 103-106.
• Crisped-leaved Elm, 134.
• Cryptomeria, 198.
• Cucumber-tree, 63, 64.
• Cunninghamia, 191.
• Cupuliferæ, 144.
• Custard-apple Family, 68.
• Cut-leaved Birch, 146.
  • Alder, 148.
• Cypress, Bald, 192.
  • Lawson's, 196.
  • Nootka Sound, 195.
  • Southern, 192.

• Dahoon Holly, 77.
• Date-plum, 120.
• Deodar Cedar, 190.
• Devil-wood, 125.
• Diospyros, 119, 120.
• Dogwood, Flowering, 111.
  • Poison, 90.
• Dotted-fruited Hawthorn, 106.
• Double Spruce, 179.
• Downy-leaved Poplar, 169.
• Dwarf Chestnut-oak, 155.
• Dwarf Mountain Sumac, 90.

• Ear-leaved Umbrella-tree, 64.
• Eastern Spruce, 181.
• Ebenaceæ, 119.
• Ebony Family, 119.
• Elæagnaceæ, 131.
• Elæagnus, 131, 132.
• Elder-leaved Mountain Ash, 102.
• Elder, Poison, 90.
• Elm, American, 135.
  • Cork, 134.
  • Crisped-leaved, 134.
  • English, 134.
  • Field, 134.
  • Kiaka, 136.
  • Red, 134.
  • Rock, 134.
  • Scotch, 134.
  • Slippery, 134.
  • Wahoo, 135.
  • Weeping, 134.
  • White, 135.
  • White-margined, 134.
  • Winged, 135.
  • Witch, 134.
• English Elm, 134.
  • Cherry, 99.
  • Hawthorn, 104.
  • Maple, 87.
  • Oak, 158.
  • Walnut, 141.
• Ericaceæ, 116.
• Euonymus, 78.
• Euphorbiaceæ, 132.

• Fagus, 160, 161.
• Fate-tree, 129.
• Field Elm, 134.
• Figwort Family, 127.
• Filbert, 149.
• Fir, Balsam, 183, 184.
  • Cephalonian Silver, 185.
  • Cilician Silver, 186.
  • European Silver, 187.
  • Fraser's Balsam, 184.
  • Great Silver, 185.
  • Japan Silver, 184.
  • Noble Silver, 187.
  • Nordmann's Silver, 184.
  • Pinsapo, 186.
  • Scotch, 177.
  • Siberian Silver, 185.
  • Silver, 184-187.
  • Southern Balsam, 184.
  • White, 186.
• Flowering Ash, 125.
  • Dogwood, 111.
• Four-winged Silverbell Tree, 121.
• Fraser's Balsam-fir, 184.
• Fraxinus, 122-125.
• French Tamarisk, 69.
• Fringe-tree, 126.

• Garden Plum, 99.
  • Red Cherry, 99.
• Garland Crab-apple, 101.
• Giant Arbor-vitæ, 194.
  • Tree Lilac, 126.
• Ginkgo-tree, 201.
• Gleditschia, 95, 96.
• Goat-willow, 166.
• Golden-chain, 92.
• Golden Larch, 189.
• Gordonia, 70.
• Gray Birch, 145, 146.
  • Pine, 178.
  • Willow, 167.
• Great Laurel, 117.
• Great-leaved Magnolia, 64.
• Great Silver Fir, 185.
  • Tree of California, 192.
• Green Ash, 123.
• Groundsel-tree, 115.
• Gum, Black, 112.
  • Sour, 112, 113.
  • Sweet, 108.
• Gymnocladus, 95.
• Gymnospermæ, 170.

• Hackberry, 136.
• Hackmatack, 188.
• Halesia, 121.
• Hamamelideæ, 107.
• Hamamelis, 107.
• Hatchet-leaved Arbor-vitæ, 194.
• Haw, Black, 114.
  • Summer, 106.
  • Yellow, 106.
• Hawthorn, Black, 106.
  • Dotted-fruited, 106.
  • English, 104.
  • Pear, 106.
  • Tall, 105.
• Hazel, 149.
• Hazelnut, 149.
• Heart-leaved Alder, 148.
  • Willow, 165.
• Heath Family, 116.
• Heavy-wooded Pine, 174.
• Hemlock, Common, 182.
  • Ground, 199.
  • Japan, 182.
  • Mountain, 182.
• Hercules'-Club, 109.
• Hibiscus, 71.
• Hickory, Big Shellbark, 142.
  • Broom, 143.
  • Shagbark, 142.
  • Shellbark, 142.
  • Swamp, 143.
  • White-heart, 142.
• Himalayan Spruce, 181.
• Hoary Alder, 147.
• Holly, 77.
• Holly Family, 77.
• Honey-locust, 95, 96.
• Honeysuckle Family, 113.
• Hop-hornbeam, 150.
• Hop-tree, 74.
• Hornbeam, 151.
• Horse-chestnut, 81, 82.
• Horse-sugar, 122.
• Hovenia, 80.

• Idesia, 67.
• Ilex, 77, 78.
• Ilicineæ, 77.
• Imperial Paulownia, 127.
• Indian Bean, 128.
  • Cedar, 190.
• Irish Juniper, 199.
• Iron-wood, 150.

• Japan Arbor-vitæ, 196.
  • Cedar, 198.
  • Hemlock, 182.
  • Larch, 188.
  • Lilac, 126.
  • Magnolia, 65.
  • Maple, 88.
  • Persimmon, 120.
  • Planer-tree, 136.
  • Pine, 176.
  • Podocarpus, 201.
  • Silver Fir, 184.
  • Storax, 120.
• Jersey Pine, 177.
• Judas-tree, 94.
• Juglandaccæ, 140.
• Juglans, 140, 141.
• Jujube, 80.
• Juniper, 198, 199.
• Juniperus, 198, 199.

• Kalmia, 116.
• Katsura-tree, 67.
• Kentucky Coffee-tree, 95.
• Kiaka Elm, 136.
• Kilmarnock Willow, 166.
• Kingnut, 142.
• Kœlreuteria, 83.

• Laburnum, 92.
• Lagerstrœmia, 109.
• Lambert's Pine, 172.
• Larch, American, 188.
  • European, 188.
  • Golden, 189.
  • Japan, 188.
• Large-flowered Magnolia, 63.
• Large-leaved Maple, 86.
• Large-toothed Aspen, 168.
• Large Tupelo, 113.
• Larix, 187-189.
• Lauraceæ, 130.
• Laurel, 116, 117.
• Laurel Family, 130.
• Laurel-leaved Willow, 165.
• Laurel-oak, 158.
• Lawson's Cypress, 196.
• Lebanon Cedar, 189.
• Leguminosæ, 92.
• Lilac, 126.
• Linden, 72, 73.
• Linden Family, 72.
• Lindera, 131.
• Liquidambar, 108.
• Liriodendron, 66.
• Live-oak, 155.
• Loblolly Bay, 70.
  • Pine, 174.
• Locust, Bristly, 94.
  • Clammy, 94.
  • Common, 93.
  • Honey, 95, 96.
• Lombardy Poplar, 169.
• Long-leaved Pine, 174.
  • Willow, 167.
• Long-racemed Buckeye, 83.
• Lonicera, 115.
• Loosestrife Family, 108.
• Lythraceæ, 108.

• Maclura, 137.
• Madeira Nut, 141.
• Magnolia, Chinese White, 65.
  • Great-leaved, 64.
  • Japan, 65.
  • Large-flowered, 63.
  • Purple Japan, 66.
  • Southern Evergreen, 63.
  • Swamp, 63.
  • Thurber's Japan, 66.
• Magnoliaceæ, 62.
• Magnolia Family, 62.
• Mallow Family, 71.
• Malvaceæ, 71.
• Maple, Ash-leaved, 89.
  • California, 86.
  • Colchicum-leaved, 87.
  • Cork-bark, 87.
  • English, 87.
  • Japan, 88.
  • Large-leaved, 86.
  • Mountain, 84.
  • Norway, 87.
  • Palmate-leaved, 88.
  • Red, 85.
  • Rock, 86.
  • Round-leaved, 88.
  • Silver, 85.
  • Striped, 85.
  • Sugar, 86.
  • Sycamore, 86.
  • Tartarian, 88.
  • Vine, 88.
  • White, 85.
• Masson's Pine, 175.
• Melia, 75.
• Meliaceæ, 75.
• Melia Family, 75.
• Mockernut, 142, 143.
• Morello Cherry, 99.
• Morus, 137, 138.
• Mossy-cup Oak, 153.
• Mountain Ash, 102, 103.
  • Hemlock, 182.
  • Laurel, 116.
  • Maple, 84.
  • Pine, 173, 177.
  • Sumac, 90.
• Mount Atlas Cedar, 190.
• Mulberry, 138.
  • Paper, 138.
• Myrtle, Crape, 109.

• Narrow-leaved Crab-apple, 101.
• Necklace-poplar, 169.
• Negundo, 88, 89.
• Noble Silver Fir, 187.
• Nootka Sound Cypress, 195.
• Nordmann's Silver Fir, 184.
• Northern Prickly Ash, 73.
  • Scrub Pine, 178.
• Norway Maple, 87.
  • Spruce, 180.
• Nut, Bitter, 143.
  • Hickory, 142, 143.
  • King, 142.
  • Mocker, 142, 143.
  • Pecan, 144.
  • Pig, 143.
• Nut-pine, 178.
• Nyssa, 112, 113.

• Oak, American White, 153.
  • Barren, 158.
  • Bartram's, 152.
  • Basket, 154.
  • Bear Scrub, 157.
  • Black, 156, 158.
  • Black Scrub, 157.
  • Box White, 153.
  • Bur, 153.
  • Chestnut, 154, 155.
  • Cow, 154.
  • English, 158.
  • Laurel, 158.
  • Live, 155.
  • Mossy-cup, 153.
  • Pin, 156.
  • Post, 153, 154.
  • Pyramidal, 159.
  • Quercitron, 156.
  • Red, 156.
  • Rough, 153.
  • Scarlet, 156.
  • Scrub, 157.
  • Shingle, 158.
  • Spanish, 156, 157.
  • Swamp, 154, 156.
  • Turkey, 159.
  • Water, 157.
  • Weeping, 159.
  • White, 153, 154.
  • Willow, 158.
  • Yellow, 155, 156.
• Oak Family, 144.
• Oak-leaved Alder, 148.
  • Mountain-ash, 102.
• Ohio Buckeye, 82.
• Old-field Pine, 174.
• Oleaceæ, 122.
• Oleaster Family, 131.
• Olive Family, 122.
• Orange, Osage, 137.
• Oriental Plane, 139.
  • Spruce, 181.
• Osage Orange, 137.
• Osmanthus, 125.
• Ostrya, 150.
• Oxydendrum, 116.

• Palmate-leaved Japan Maple, 88.
• Papaw, 68.
• Paper Birch, 145.
  • Mulberry, 138.
• Parsley-leaved Thorn, 105.
• Paulownia, 127.
• Peach, 97.
• Pear Hawthorn, 106.
• Pear-tree, 101.
• Pea-tree, 92.
• Pecan-nut, 144.
• Pepperbush, 117, 118.
• Pepperidge, 112.
• Persea, 130.
• Persimmon, 119, 120.
• Phellodendron, 74.
• Picea, 179-181.
• Pignut, 143.
• Pine, Austrian, 175.
  • Bhotan, 172.
  • Black, 175.
  • Cembra, 173.
  • Chile, 190.
  • Corsican, 175.
  • Gray, 178.
  • Heavy-wooded, 174.
  • Japan, 176.
  • Jersey, 177.
  • Lambert's, 172.
  • Loblolly, 174.
  • Long-leaved, 174.
  • Masson's, 175.
  • Mountain, 173, 177.
  • Nut, 178.
  • Old-field, 174.
  • Piñon, 178.
  • Pitch, 174.
  • Red, 176.
  • Scotch, 177.
  • Scrub, 177, 178.
  • Stone, 173.
  • Sugar, 172.
  • Swiss Stone, 173.
  • Table-Mountain, 177.
  • Twisted-branched, 177.
  • Umbrella, 191.
  • Weymouth, 172.
  • White, 172, 173.
  • Yellow, 174,176.
• Pine Family, 170.
• Pin-oak, 156.
• Piñon Pine, 178.
• Pinsapo Fir, 186.
• Pitch-pine, 174.
• Pinus Austriaca, 175.
  • Banksiana, 178.
  • Cembra, 173.
  • contorta, 177.
  • densiflora, 176.
  • edulis, 178.
  • excelsa, 172.
  • flexilis, 173.
  • inops, 177.
  • Lambertiana, 172.
  • Laricio, 175.
  • Massoniana, 175.
  • mitis, 176.
  • monophylla, 178.
  • monticola, 173.
  • palustris, 174.
  • ponderosa, 174.
  • pungens, 177.
  • resinosa, 176.
  • rigida, 174.
  • strobus, 172.
  • sylvestris, 177.
  • Tæda, 174.
• Plane, Oriental, 139.
• Planera, 135, 136.
• Planer-tree, 136.
• Plane-tree Family, 139.
• Platanaceæ, 139.
• Platanus, 139.
• Plum, 98, 99.
• Plum, Date, 120.
• Podocarpus, 200, 201.
• Poison Dogwood, 90.
  • Elder, 90.
  • Sumac, 90.
• Pomegranate-tree, 108.
• Populus, 167-170.
• Poplar, Balsam, 170.
  • Black, 170.
  • Carolina, 169.
  • Downy-leaved, 169.
  • Lombardy, 169.
  • Necklace, 169.
  • White, 168.
• Post-oak, 153, 154.
• Prickly Ash, 73, 74.
• Pride of India, 75.
• Prunus, 97-100.
• Ptelea, 74.
• Pterostyrax, 121.
• Pulse Family, 92.
• Punica, 108.
• Purple Japan Magnolia, 66.
• Purple-leaved Birch, 146.
• Purple Willow, 165.
• Pyramidal Birch, 146.
  • Oak, 159.
• Pyrus, 100-103.

• Quaking-asp, 168.
• Quassia Family, 76.
• Quercitron Oak, 156.
• Quercus alba, 153.
  • aquatica, 157.
  • bicolor, 154.
  • Cerris, 159.
  • coccinea, 156.
  • falcata, 157.
  • fastigiata, 159.
  • heterophylla, 152.
  • ilicifolia, 157.
  • imbricaria, 158.
  • lyrata, 154.
  • macrocarpa, 153.
  • Michauxii, 154.
  • Muhlenbergii, 155.
  • nigra, 158.
  • palustris, 156.
  • pedunculata, 159.
  • pendula, 159.
  • Phellos, 152, 158.
  • prinoides, 155.
  • Prinus, 154.
  • Robur, 158.
  • rubra, 152, 156.
  • sessiliflora, 159.
  • stellata, 153.
  • tinctoria, 156.
  • virens, 155.
• Quince-tree, 102.

• Rabbit-berry, 132.
• Red Ash, 123.
  • Bay, 130.
  • Birch, 147.
  • Buckeye, 82.
  • Cedar, 199.
  • Cherry, 99.
  • Elm, 134.
  • Horse-chestnut, 82.
  • Maple, 85.
  • Mulberry, 138.
  • Oak, 156.
  • Pine, 176.
  • Plum, 98.
• Redbud, 94.
• Red-leaved Alder, 148.
• Redwood, 193.
• Retinospora, 193, 196, 197.
• Rhamnaceæ, 79.
• Rhamnus, 79, 80.
• Rhododendron, 117.
• Rhus, 89-91.
• River Birch, 147.
• Robinia, 93, 94.
• Rock Elm, 134.
  • Maple, 86.
• Rosaceæ, 97.
• Rose-acacia, 94.
• Rose Family, 97.
• Rough Oak, 153.
• Round-leaved Maple, 88.
• Rowan-tree, 103.
• Rue Family, 73.
• Rutaceæ, 73.

• Salicaceæ, 161.
• Salisburia, 201.
• Salix Alba, 164.
  • amygdaloides, 163.
  • angustata, 165.
  • annularis, 164.
  • Babylonica, 164.
  • caprea, 166.
  • cinerea, 167.
  • cordata, 165.
  • decipiens, 164.
  • discolor, 166.
  • falcata, 163.
  • fragilis, 163.
  • longifolia, 167.
  • lucida, 164.
  • myricoides, 165.
  • nigra, 163.
  • pentandra, 165.
  • purpurea, 165.
  • rigida, 165.
  • rostrata, 166.
  • rufescens, 165.
  • Russelliana, 164
  • viridis, 164.
  • vitellina, 164.
• Sapindaceæ, 81.
• Sapodilla Family, 118.
• Sapotaceæ, 118.
• Sassafras, 130, 131.
• Scarlet-fruited Thorn, 104.
• Scarlet Oak, 156.
• Sciadopitys, 191.
• Scotch Elm, 134.
  • Fir, 177.
  • Pine, 177.
• Scrophulariaceæ, 127.
• Scrub Oak, 157.
  • Pine, 177, 178.
• Seaside Alder, 148.
• Sequoia, 192, 193.
• Service-berry, 107.
• Shad-bush, 107.
• Shagbark Hickory, 142.
• Sheep-berry, 114.
• Shellbark Hickory, 142.
• Shepherdia, 132.
• Shingle Oak, 158.
• Shining Willow, 164.
• Shrubby Trefoil, 74.
• Siberian Cornel, 111.
  • Silver Fir, 185.
• Silk-tree, 96.
• Silverbell-tree, 121.
• Silver Cedar, 190.
  • Fir, 184-187.
  • Maple, 85.
  • Spruce, 181.
• Silver-leaved Elæagnus, 132.
• Simarubaceæ, 76.
• Single Spruce, 179.
• Slippery Elm, 134.
• Sloe, 98.
• Smoke-tree, 91.
• Smooth Alder, 148.
  • Sumac, 90.
• Soapberry Family, 81.
• Sorrel-tree, 116.
• Sour Gum, 112, 113.
• Sourwood, 116.
• Southern Cypress, 192.
• Spanish Oak, 156, 157.
• Speckled Alder, 147.
• Spice-bush, 131.
• Spindle-tree, 78.
• Spruce, Alcock's, 181.
  • Black, 179.
  • Double, 179.
  • Eastern, 181.
  • Himalayan, 181.
  • Norway, 180.
  • Oriental, 181.
  • Silver, 181.
  • Single, 179.
  • Tiger's-tail, 180.
  • White, 179.
• Spurge Family, 132.
• Stag-horn Sumac, 90.
• Sterculia, 71.
• Sterculiaceæ, 71.
• Stone-pine, 173.
• Storax, 120.
• Storax Family, 120.
• Striped Maple, 85.
• Stuartia, 69, 70.
• Styracaceæ, 120.
• Styrax, 120.
• Sugarberry, 136.
• Sugar Maple, 86.
  • Pine, 172.
• Sumac, 90, 91.
• Summer Haw, 106.
• Swamp Hickory, 143.
  • Magnolia, 63.
  • Oak, 156.
  • Post-oak, 154.
  • White Oak, 154.
• Sweet Bay, 63.
  • Birch, 146.
  • Buckeye, 82.
  • Gum, 108.
  • Pepper-bush, 117, 118.
  • Viburnum, 114.
• Sweetleaf, 122.
• Swiss Stone-pine, 173.
• Sycamore, American, 139.
• Sycamore-maple, 86.
• Symplocos, 122.
• Syringa, 126.

• Table-Mountain Pine, 177.
• Tacamahac, 170.
• Tamarack, 188.
• Tamariscineæ, 68.
• Tamarisk, 69.
• Tamarix, 69.
• Tartarian Honeysuckle, 115.
  • Maple, 88.
• Taxodium, 192.
• Tea Family, 69.
• Ternstrœmiaceæ, 69.
• Thorn, 104, 105.
• Thurber's Japan Magnolia, 66.
• Thuya, 193, 194.
• Thuyopsis, 193.
• Tiger's-tail Spruce, 180.
• Tilia, 72, 73.
• Tiliaceæ, 72.
• Toothache-tree, 73.
• Torreya, 200.
• Tree Hibiscus, 71.
• Tree of Heaven, 76.
• Trefoil, 74.
• Tsuga, 182.
• Tulip-tree, 66.
• Tupelo, 113.
• Turkey Oak, 159.

• Ulmus, 133-135.
• Umbrella-pine, 191.
• Umbrella-tree, 65.
• Urticaceæ, 133.

• Venetian Sumac, 91.
• Verbenaceæ, 129.
• Viburnum, 113, 114.
• Vine Maple, 88.
• Vitex, 129, 130.

• Wahoo, 78, 135.
• Walnut, 140, 141.
• Walnut Family, 140.
• Washington Thorn, 105.
• Water Ash, 124.
  • Beech, 151.
  • Locust, 96.
  • Oak, 157.
• Weeping Ash, 125.
  • Birch, 146.
  • Elm, 134.
  • Oak, 159.
  • Willow, 164.
• White Ash, 123.
  • Basswood, 73.
  • Birch, 145, 146.
  • Cedar, 194, 195.
  • Elm, 134, 135.
  • Fir, 186.
  • Maple, 85.
  • Mulberry, 138.
  • Oak, 153, 154.
  • Poplar, 168.
  • Spruce, 179.
  • Willow, 164.
• White-heart Hickory, 142.
• Whitewood, 72.
• Willow, American Bay, 164.
  • Ash-colored, 167.
  • Bay, 164, 165.
  • Beaked, 166.
  • Black, 163.
  • Bog, 166.
  • Brittle, 163.
  • Crack, 163.
  • Glaucous, 166.
  • Goat, 166.
  • Gray, 167.
  • Heart-leaved, 165.
  • Kilmarnock, 166.
• Willow, Laurel-leaved, 165.
  • Long-leaved, 167.
  • Purple, 165.
  • Shining, 164.
  • Weeping, 164.
  • White, 164.
• Willow Family, 161.
• Willow-oak, 158.
• Winged Elm, 135.
• Witch-elm, 134.
• Witch-hazel, 107.
• Witch-hazel Family, 107.

• Xanthoxylum, 73.

• Yellow-barked Oak, 156.
• Yellow Birch, 146.
  • Cucumber-tree, 64.
  • Haw, 106.
  • Plum, 98.
• Yellow-wood, 93.
• Yew, 199.
• Yulan, 65.

• Zizyphus, 80.