Part 65

Pigeon cherry (Primus Pennsylvanica, L. f.) 124, 125

Pignut (Carya porcina, Nutt.) 53-55

Pin cherry (Prunus Pennsylvanica, L. f.) 124, 125 oak (Quercus palustris, Du Roi) 91-93

Pine family: Conifers. (=Pinoideae=) 1-28

Pine. Jack, Gray, Scrub, Spruce pine (Pinus Banksiana, Lamb) 8, 9 Pitch, Hard pine (Pinus rigida, Mill.) 6, 7 Red, Norway pine (Pinus resinosa, Ait.) 10, 11 Scotch pine (dit incorrectly Scotch fir) (Pinus sylvestris, L.) 11, 12 White pine (Pinus Strobus, L.) 4-6

=Pinoideae.= (Pine family: Conifers) 1-28 =Abietaceae.= 1-22 Abies balsamea, Mill. Fir balsam, Balsam, Fir 20-22 Larix Americana, Michx. Tamarack, Hacmatack, Larch, Juniper 2-4 laricina, Koch. Tamarack, Hacmatack, Larch, Juniper 2-4 Picea alba, Link White, Cat, Skunk, Labrador spruce 16-18 Canadensis, B.S.P. White, Cat, Skunk, Labrador spruce 16-18 nigra, Link. Black, Double, Swamp, Water spruce 12-14 rubra, Link. Red spruce 15, 16 semiprostrata Dwarf black spruce 12 Pinus Banksiana, Lamb. Jack, Gray, Scrub, Spruce pine 8, 9 resinosa, Ait. Red, Norway pine 10, 11 rigida, Mill. Pitch, Hard pine 6, 7 Strobus, L. White pine 4-6 sylvestris, L. Scotch pine 11, 12 Tsuga Canadensis, Carr. Hemlock 19, 20

=Cupressaceae.= 2, 23-28 Chamaecyparis sphaeroidea, Spach. White cedar, Cedar 25, 26 thyoides, L. White cedar, Cedar 25, 26 Juniperus Virginiana, L. Red cedar, Savin 26-28 Thuja occidentalis, L. Arbor-vitae, White cedar 23, 24

Pitch pine. (Pinus rigida. Mill.) 6, 7

Plane tree family. (=Platanaceae=) 110, 111 =Platanaceae.= (Plane tree family) 110, 111

Platanus occidentalis, L. Buttonwood, Sycamore. Buttonball, Plane tree 110, 111

Plum family. (=Drupaceae=) 122-128

Plum, Wild plum. (Prunus Americana, Marsh.) 123, 124, 171 Wild, Red, Horse, Canada plum. (Prunus nigra, Ait.) 122, 123, 171

Poison elder (Rhus vernix. L.) 136, 137 ivy (Rhus toxicodendron) 137 sumac (Rhus vernix, L.) 136, 137

=Pomaceae.= (Apple family) 112-121 Amelanchier Canadensis, Medic. Shadbush, June-berry 116, 117 Crataegus Arnoldiana, Sarg., Thorn 121 coccinea, L,. Thorn 118, 119 coccinea, var. mollis, T. & G. 120, 121 Crus-Galli, L. Cockspur thorn 117, 118, 171 mollis, Scheele Thorn 120, 121 punctata, Jacq.....Cockspur thorn 118 submollis, Sarg. Thorn 121 subvillosa, Schr. Thorn 120, 121

Malus malus, Britton Apple tree 115

Pyrus Americana, DC. Mountain ash 112, 113 aucuparia European mountain ash 113, 115 communis, L. Pear tree 115 malus, L. Apple tree 115 sambucifolia, Cham. & Schlecht. Mountain ash 113-115

Sorbus Americana, Marsh. Mountain ash 112, 113 sambucifolia, Rm. Mountain ash 113, 115

Poplar, Tulip tree, White wood. (Liriodendron Tulipifera, L.) 104-106 Aspen. (Populus tremuloides, Michx.) 29, 30 Balsam, Balm of Gilead. (Populus balsamifera. L.) 36, 37 Cottonwood. (Populus deltoides, Marsh.) 34, 35 Poplar, Large-toothed aspen. (Populus grandidentata, Michx.) 31, 32 Swamp poplar, Cottonwood, Poplar. (Populus heterophylla, L.) 33, 34 White, Silver-leaved poplar. (Populus alba, L.) 39, 40

Poplar birch. (Betula populifolia, Marsh.) 66-68

Populus alba, L. Abele, White, Silver-leaved poplar 39, 40 balsamifera, L. Balsam 3, 36, 37 balsamifera, var. candicans, Gray. Balm of Gilead 37-39, 171 balsamifera, var. intermedia Balsam, Poplar, Balm of Gilead 36

Populus balsamifera, var. latifolia Balsam, Poplar, Balm of Gilead 36 candicans, Ait., Balm of Gilead 37-39, 171 deltoides, Marsh. Cottonwood, Poplar 34, 35 grandidentata, Michx. Poplar, Large-toothed aspen 31, 32 heterophylla, L. Swamp poplar, Poplar, Cottonwood 33, 34 monilifera, Ait. Cottonwood 34, 35 tremuloides, Michx. Aspen, Poplar 29, 30

Post oak (Quercus stellata, Wang.) 77, 78

Poverty birch (Betula populifolia, Marsh.) 66-68

Prunus Americana, Marsh. Wild plum 123, 124, 171 var. nigra, Waugh Wild, Red, Horse, Canada plum 122, 123, 171 Avium, L. Mazard cherry 128 nigra, Ait. Wild plum 122, 123, 171 Pennsylvanica, L. f. Wild red, Pin, Pigeon, Bird cherry 124, 125 serotina, Ehrh. Rum, Black cherry 127, 128 Virginiana, L. Chokecherry 125, 126

Pulse family. (=Leguminosae=) 129-132

Pussy willow (Salix discolor, Muhl.) 40, 41, 171

Pyrus Americana, DC. Mountain ash 112, 113 aucuparia European mountain ash 113, 115 communis, L. Pear tree 115 malus, L. Apple tree 115 sambucifolia, Cham. & Schlecht. Mountain ash 113-115

Quercus acuminata, Sarg. Chestnut oak 84, 85 alba, L. White oak 75-77 bicolor, Willd. Swamp white oak 80-82 coccinea, Wang. Scarlet oak 88, 89 coccinea, var. tinctoria, Gray. Black oak 89-91 ilicifolia, Wang. Scrub, Bear oak 93, 94 macrocarpa, Michx. Bur, Over-cup, Mossy-cup oak 79, 80 minor, Sarg. Post, Box white oak 77, 78 Muhlenbergii, Engelm. Chestnut oak 84, 85 nana, Sarg. ....Scrub, Bear oak 93, 94 obtusiloba, Michx. Post, Box white oak 77, 78 palustris, Du Roi. Pin, Swamp, Water oak 91-93 platanoides, Sudw. Swamp white oak 80-82 prinoides, Willd. Scrub white, Scrub chestnut oak 85 prinus, L. Chestnut, Rock chestnut oak 82-84 pumila, Sudw. Scrub, Bear oak 93, 94