210 ' Statistics of the Flora of the Northern States. 



Class II — continued. 



Orders. 



Whole 

 No. of 

 Genera. 



No. of Gen- 

 era with 



Indigenous 

 Species. 



No. of Intro- 

 duced (natu- 

 ralized and 

 adventive) 

 Species. 



Whole No 

 of Species 



No. of 

 Indigenous 

 Species. 



No. of our 

 Indigenous 



Species 

 common to 



Europe. 



Oleacese, 

 Aristolochiacese, 



5 



4 



1 



10 



_ 



9 





2 



2 





6 



6 





Nyctaginacese, 



1 



1 





1 



1 





Phytolaccaceae, 



1 



1 





1 



1 





Chenopodiacese, 



9 



7 



11 



21 



10 



6 



Amarantacese, 



6 



5 



9 



14 



5 





Polygon ace 03, 



4 



3 



10 



32 



22 



6 



Lauract se, 



4 



4 





5 



5 





Thymeleaceae, 



1 



1 





1 



1 





Elseagnaceae, 



1 



1 





1 



1 





Santalacese, 



2 



2 





3 



3 





Loranthactse, 



1 



1 





1 



1 





Saururaceee, 



1 



1 





1 



1 





Ceratophyllacese, 



1 



1 





1 



1 



1 



Callitrichacese, 



1 



1 





3 



3 



3 



Podostemacese, 

 Euphorbiacese, 



1 



1 





1 



1 





9 



9 



5 



33 



28 





EmpetracesB, 



2 



2 





2 



2 



1 



Urticacese, 



11 



10 



4 



19 



15 



1 



Platanacea?, 



1 



1 





1 



1 





Juglandacese, 



2 



2 





9 



9 





Cupuliieraa, 



6 



6 





25 



25 



1 



Myricacoae, 



2 



2 





3 



3 



1 



Betulacese, 



2 



2 





10 



10 



4 



Salicaceae, 



2 



2 



4 



28 



24 



3 



Subcl. II. 















Gymnosperm^e. 















Conifeiae, 



8 



8 





20 



20 



2 



Total, 



622 



522 



223 



1713 



1490 



180 



Class II. MONOCOTYLEDONE^E 



seu ENDOGENJ2. 



Araceae, 



6 



6 





7 



7 



2 



Typhacese, 



2 



2 





7 



7 



6 



Lemnactss, 



1 



1 





5 



5 



4 



Naiadactse, 



5 



5 





16 



16 



12 



Alismaoeae, 



5 



5 





12 



12 



4 



Hydrocharidacese, 



3 



3 





3 



3 



2 



Burmanniaeese, 



1 



1 





1 



1 





Orchid aucse, 



17 



17 





51 



51 



10 



Amaryllidacese, 



4 



4 





4 



4 





Hsemodoracese, 



3 



3 





4 



4 





Bromeliacese, 



1 



1 





1 



1 





Iridacese, 



2 



2 





6 



6 





Dioscoreacese, 



1 



1 





1 



1 





Smilaceae, 



3 



3 





18 



18 





