Continued 
10 . 
Orders 
• 
• 
• 
Illinois Plants 
Indie:. : Intro. : 
• 
• 
Total : 
Indigenous in 
Northern U. S. 
Juncaceae 
6 
6 
26 
Pontederiaceae 
3 
3 
4 
Commelynaceae 
5 
5 
6 
Cyperaceae 
97 
97 
213 
Gramineae 
102 
12 
114 
162 
Total Phaenogamous 
1029 
75 
1104 
2036 
Equisetaceae 
4 • 
4 
10 
Filices 
19 
19 
49 
Total 
1052 
75 
1127 
2095 
List of the principal Natural Orders, arranged according to the 
number of Indigenous orders in 
Illinois 
Northern U, S. 
Compositae 
166 
Compositae 
273 
Gramineae 
102 
Cyperaceae 
213 
Cyperaceae 
97 
Gramineae 
162 
Leguminoseae 
49 
Leguminoseae 
91 
Rosaceae 
32 
Rosaceae 
71 
Scrophularinaceae 
30 
Ericaceae 
62 
Ranunculaceae 
30 
Scrophularinaceae 
54 
Labiateae 
28 
Orchidaceae 
51 
Umbelliferae 
19 
Ranunculaceae 
49 
Cruciferae 
18 
Labiateae 
49 
Orchidaceae 
17 
Cruciferae 
46 
Polygalaceae 
17 
Umb ill if erae 
37 
Euphorbiaceae 
17 
Onagraceae 
36 
Cupuliferae 
17 
Caryophyllaceae 
30 
From these tables it will be seen that there are, in Illinois, one 
hundred and sixty-six species of compositeae, or compound flowering 
t 
plants; one hundred and two of Grammeae, or true grasses; and forty- 
nine of Leguminoseae, or plants of the pea family. The whole number of 
