ta, Sarg. _Green ash_ 166, 172
pubescens, Lam. _Red, Brown, River ash_ 164, 165
sambucifolia, Lam. _Black, Swamp, Basket, Hoop, Brown ash_ 167, 168
viridis, Michx. f. _Green ash_ 166

Olive family. (=Oleaceae=) 162-168

Osier (Cornus alternifolia, L. f.) 157, 158

Ostrya Virginica, Willd. _Hop hornbeam, Ironwood, Leverwood_ 57, 58

Over-cup oak. (Quercus macrocarpa, Michx.) 79, 80

P

Paper birch (Betula papyrifera, Marsh.) 68-70

Pear tree (Pyrus communis, L.) 115

Pepperidge (Nyssa sylvatica, Marsh.) 159, 160

Persimmon (Diospyros Virginiana, L.) 160-162

Picea alba, Link _White spruce_ 16-18
Canadensis, B. S. P. _White spruce_ 16-18
nigra, Link. _Black spruce_ 12-14
nigra, _var._ semiprostrata _Dwarf black spruce_ 12
rubra, Link _Red spruce_ 15, 16

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-vi