IOWA ACADEMY OF SCIENCES. 



79 



Tl. FmximiK americana. L. 



7:!. F. riridia. Michx. 



T4. F. SanihurifoJia. Lam.? 



r7;»Hi(s.f((;ra. Miehx. 

 ('. (ttnirivntia, L. 

 U. race nil ixa, Thoma 

 Ccltis occidentalis, L. 

 Morus rubra, L. 



OLEACE.r'K. 



White Ash 



L'KTICACE/E. 



Slippery or Red Elm. 



American or White Elm. 



Cork or Rock Elm. 



Hackberry. 



Red Mulberry. On authority of Mr. Harris. 



JUGLANDACEiE. 



80. Juohina cinerea. L. 



81. J. Ilium. L. 



82. Hicin-ia ovata (Mill.), Britton. 



83. H. i/Mim (Mill.), Britton. 



Butternut. 

 Black Walnut. 

 Shell-bark Hickory. 

 Pignut. 



S4. Bdulalaita.'L. 



85. B. papyrifcra. Marsliall. 



86. B. nigra, L. 



87. B.pumHa,L. 



88. Alnus incnna, Willd. 



89. A. gcrrulata, Wllld. 



90. Coiylus amc7'icana, Walt. 



91. r. iiistrata. Ait. 



92. (Mrtia virginica, Willd. 



9:f. Corpiiiits cctri)liiiia7ia, Walt. 



94. (iucmiK nlha, L. 



95. Q. mnrrocarpa. Michx. 



96. Q. bivolor. Michx. 



97. Q. rubra. L. 



98. Q. coccinea, Wans. 



09. Q. tiiutiiria, Bartram. 



iOO. Snlix niyra. Marsh. 



101. S. /)i(»n7i>. Marsh. 



102. .^. caitdidd, Willd. 

 lOy. Populus alha. L. 



104. P. tremuloidcx, Michx. 



105. P. grandidentata, Michx. 

 100. P. monilifera. Ait. 



CUPULIFERyE. 



Sweet or Black Birch. 

 Canoe or Paper Birch. 

 Red or River Birch. 

 Low Birch. 

 Speckled Alder. 

 Smooth Alder. 

 Wild Hazel-nut. 

 Beaked Hazel-nut. 

 American Hop Hornbeam. 

 Iron-wood or Water Beech 

 White Oak. 

 Bur Oak. 



Swamp White Oak. 

 Red Oak. 

 Scarlet Oak. 

 Quercitron or Black Oak. 



SALICACE^. 



Black Willow. 



Prairie Willow. 



Hoary Willow. 



White Poplar. Frequent escape. 



Trembling Aspen. 



Large-toothed Aspen. 



Cottonwood. 



Pi))i/ss?r../.i/8, L. 



P. baiihsiana, Lambert. 



P. >r.si)i.(.so. Ait. 



Tsiii/a r(t)inde)m.t, Carr. 



Larir Inriciiift, Koch. 



JfOM'p'/K.x cinntmtnis, L. 



J. virginiana, L. 



Tnxuii caiiademis, Willd. 



Sinilax rotundifoUa. L. 



White Pine. 



Northern Scrub Pine. 



Red or Norway Pine. 



HemlocK. 



Tamarack or American Larch. 



Common .Juniper. 



Red Cedar. 



American Yew or Ground Hemlock. 



Common Green Brier. 



It may be well to compare the woody Hora of Western Wisconsiu with 

 that of the prairie region. Since presenting this paper several catalognes 

 have appeared that will give us an accurate idea of tlie woody flora of prai- 

 rie regions. Bessc-y and Webber, "Flora of Nebraska," "Bessey's Prelimiu- 



