10 BIKDS Of ILLINOIS. 



As to dicotyledonous trees, it may be said that while only 3 species 

 (i. e., wild red cherry, Primus pennsylvanica; cork elm, Ulmus race- 

 mosa, and paper or canoe birch, Betula papyracea,) are confined to 

 the northern portion of the State, at least 33 species are restricted 

 mainly to the southern half, the following comprising the latter 

 list : Cucumber tree (Magnolia acuminata), umbrella tree (M. um- 

 brella}, tulip tree (Liriodendron tid'qnfcra)* , deciduous holly (Ilex 

 decidua), Indian cherry (Rhamnus caroliniana) , black locust (Robinia 

 pseudacacia), water locust (Gleditschia monosperma}} , Chicasaw plum 

 (Primus chicasa), Washington thorn (Crateegus cordata), tree haw- 

 thorn (Cratagus arborescens) , narrow-leafed crab-apple (Pyrus augus- 

 tifolia), sweet gum (Liquidambar styraciflua), Hercules' club (Aralia 

 spinosa), tupelo gum (Nyssa uniflora), farkleberry (Vaccinium arbor- 

 eum), southern buckthorn (Biimdia lycioides), southern iron-wood (B. 

 lanuginosa), silver bell tree (llalesia, tetraptcra), western catalpa 

 (Catalpa speciosa), "privet" (Forestiera acuminata), winged elm 

 (Ulmus alata), water elm (Planera aqiiatica), Mississippi hackberry 

 (Celtis mississippiensis) , water hickory (Carya aquatica), small shell- 

 bark (C. microcarpa), overcup oak (Qaercus lyrata), Spanish oak 

 (Q. falcata), willow-oak (Q. phellos), chinquapin (Castanea pumila), 

 black alder (Alnus serrulata), yellow pine (Pinus mitis), white cedar 

 (Chamacyparis sphceroidea), and bald cypress (Taxodium distichnm). 



The decidedly "Austroriparian" fades presented by the vegetation 

 of the southern counties (north to Wabash and St. Clair) is further 

 illustrated by the parasitic mistletoe (Phoradendron flavescens), the 

 arborescent grass, forest-reed, or switch-cane (Arundinaria tecta), 

 and the large number of vines, besides the great luxuriance of vege- 

 tation generally. It will be best to treat of each section (so far as 

 the writer possesses the knowledge to do so), under a separate 

 heading, rather than to enter here into further details. 



The Lake Shore District (by E. W. NELSON.!) "The region 

 about the southern end of Lake Michigan, in Illinois, presents an 

 unusually fertile field for the ornithologist. Situated, as it is, mid- 

 way between the wooded region of the East and the treeless plains 

 of the West, with the warm river bottoms of the South, rich in 

 southern species, extending within a comparatively short distance, 

 and the great Lake upon the north, northeastern Illinois forms a 

 kind of "four corners" where the avian-faunse of four regions inter- 

 grade. To the proximity of Lake Michigan we are indebted for a 



* North to Vermilion (Ji/'r Professor Forbes in 



t North to Illinois River bottons, near the mouth of that stream (Forbes). 



: In Bulletin of the Essex Institute (Salem, Mass.). Vol. VIII, 1876, pp. 90-92. 



