THE NORTHERN HARDWOOD FOREST. 45 



SPECIES MENTIONED IN THIS BULLETIN. 



Alders Alnus sp. 



Arborvitse Thuja occidentalis Linn. 



Ash, black Fraxinus nigra Marsh. 



Ash, white Fraxinus americana Linn. 



Aspen Populus tremuloides Michx. 



Aspen, large tooth Populus grandidentata Michx. 



Balm of Gilead Populus balsamifera Linn. 



Balsam fir. (See Fir.) 



Basswood Tilia americana Linn. 



Beech Fagus atropunicea (Marsh) Sudworth. 



Birch, black ("sweet," "cherry") Betula lenta Linn. 



Birch, gray ("white ") Betula populifolia Marsh. 



Birch, paper ("white," "canoe ") Betula papyrifera Marsh. 



Birch, yellow ("gray," "red," "silver"). Betula lutea Michx. f. 



Cherry, black Prunus serotina Ehrh. 



Cherry, fire ("pin," "wild red ").... Prunus pennsylvanica Linn, f . 



Chestnut Castanea dentata (Marsh) Borkh. 



Cucumber tree Magnolia acuminata Linn. 



Elm, cork ("rock," "hard ") Ulmus racemosa Thomas. 



Elm, slippery; ("red ") Ulmus pubescens Walt. 



Elm, white ("gray," "soft") Ulmus americana Linn. 



Fir, balsam Abies balsamea (Linn.) Mill. 



Gum, black ("sour") Nyssa sylvatica Marsh. 



Gum, red ("sweet ") Liquidambar styracifiua Linn. 



Hemlock Tsuga canadensis (Linn.) Carr. 



Hickory Eicoria sp. 



Ironwood ("hornbeam ") ~ Ostrya virginiana (Mill.) Koch. 



Magnolia Magnolia sp. 



Maple, black Acer saccharum nigrum (Mich, f .) Britton. 



Maple, red Acer rubrum Linn. 



Maple, silver Acer saccharinum Linn . 



Maple, striped ("moosewood ").. Acer pennsylvanicum Linn. 



Maple, sugar Acer saccharum Marsh. 



Oak, red Quercus rubra Linn. 



Oak, white Quercus alba Linn. 



Pine, jack Pinus divaricata (Ait.) Du Mont de Cours. 



Pine, norway ("red ") Pinus resinosa Ait. 



Pine, white Pinus strobus Linn. 



Poplar, yellow ("tulip ") Liriodendron tulipifera Linn. 



Poplar. (See Aspens and Balm of Gilead) . 



Spruce, black Picea mariana (Mill.) B. S. P. 



Spruce, red Picea rubens Sargent. 



Spruce, white Picea canadensis (Mill.) B . S . P. 



Sycamore Platanus occidentalis Linn. 



Tamarack ("larch ")...... Larix laricina (Du Roi) Koch. 



Walnut Juglans sp. 



Willows Salix sp. 



