ttonwood_ 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

Q

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

Quercus rubra, L. _Red oak_ 86, 87
stellata, Wang. _Post, Box white oak_ 77, 78
tinctoria, Bartram. _Black, Yellow oak_ 89-91
velutina, Lam. _Black, Yellow oak_ 89-91

R

Red ash (Fraxinus Pennsylvanica, Marsh.) 164, 165
birch (Betula nigra, L.) 65, 66
cedar (Juniperus Virginiana, L.) 26-28
elm (Ulmus fulva, Michx.) 97, 98
maple (Acer rubrum, L.) 140-142
mulberry (Morus rubra, L.) 102, 103
oak (Quercus rubra, L.) 86, 87
pine (Pinus resinosa, Ait.) 10, 11
plum (Prunus nigra, Ait.) 22, 123
spruce (Picea rubra, Link) 15, 16

Rhus copallina _Dwarf sumac_ 137
glabra _Smooth sumac_ 137
hirta, Sudw. _Staghorn sumac_ 134, 135
toxicodendron _Poison ivy_ 137
typhina, L. _Staghorn sumac_ 134, 135
venenata, DC. _Dogwood, Pois