XV111 
On the edge of the prairie, in South Evanston, is a small field made promi- 
nent by reason of the fact that it is the only spot in Illinois from which the Lyco- 
podium inundatum, L., has been reported- The plants grow in moist prairie soil 
and occupy an area of several square yards . Associated with the Lycopodium 
is the Drosera rotundifolia, L-, Pogonia ophioglossoides, Nutt., Calopogon pul- 
chellus, B. Br., and several rare species of Polygonum. 
The lake shore at Evanston has been previously noticed in connection with 
the Salsola kali, L. ; Polenasia and Arctostaphylos also grow there. This area is 
too extensive to treat exhaustively,’ but is interesting because of the wide range 
of species found growing in the sand and on the bluffs. 
Probably the most unique feature of our district is the chain of ravines, in 
the bluffs, from Lakeside northward. In these ravines the plants characteristic 
of prairie soil, dry and moist woods, swamps and sandy areas, are found grouped 
together. The beautiful Cypripedium spectabile, Swartz., the Hepatica, the 
Sanwort and many Composite find here conditions favorable to their develop- 
ment. 
Stony Island and Hog Island are also localities of great botanical interest, 
furnishing many species seldom met with elsewhere. Becent improvements have, 
however, changed the floral aspect of the area. Hog Island is situated about one 
mile southeast of Grand Crossing and is intersected by Stony Island avenue, 
about two blocks south of the C., Ft. W. & P. B. B. It is from three to five feet 
higher than the surrounding low prairie, and consists of about twenty acres. Stony 
Island is situated about one mile to the south. The flora of both localities has 
been exceedingly varied. The platting of the former into building lots and the 
improvements incident thereto, have caused a material change in the flora and the 
extermination of some of the rarer forms, such as Hydrastis canadensis, L.; Tril- 
lium cernuum, L.; Cypripedium spectabile, Swartz., pubescens,Willd., and parvi- 
florum, Salisb. 
STATISTICS OF THE CATALOGUE. 
In order to simplify and to more clearly set forth the facts in the composition 
of our Flora, the following tables are presented. By means of these tables we 
shall attempt to give an analysis of the larger groups and orders and to compare 
them with the statistics of other floras. The enumeration is made to include the 
species and varieties, both being numbered in the catalogue, with the exception 
of those in the appendix, 14 in number. The total number of plants recorded and 
numbered is 1322, distributed among 113 families and 488 genera, and may be 
grouped as follows: 
1. Native species 1033 
2. Introduced species 177 
Total number of species 1210 
3. Native varieties 107 
4. Introduced varieties 5 
Total varieties * 112 
Total species and varieties 1322 
5. Additions from appendix 1, genera 2 — 
Species and varieties 14 
Final total 1336 
