226 Dr James Hector on the Physical Features of the 
; In British North 
No. of | No. of Of which America, 
Orders. Genera, | Species. yer eh : 
Genera. | Species. 
Plantaginee, 1 2 1 5 
Nyctaginex, 2 2 2 3 
Polygonacex, 4 14 5 34 
Amaranthacez, . 1 1 a 1 6 
Chenopodex, 8 17 1 8 20 
Santalacex, 1 2 1 2 
Elzeagneze, 2 3 2 3 
Aristolochiacex, 1 1 1 1 
Euphorbiacee, . 1 1 cee 2 8 
Cupuliferx, 3 4 1 5 15 
Salicaceze, 2 ol 2 48 
Cannabinacex, . 1 1 2 2 
Urticaceze, 3 3 4 8 
Betulacexe, 2 4 a3 2 11 
Coniferze, . 5 13 4 rf 20 
Typhacee, 2 3 2 4 
Aroidex, . 3 3 6 9 
Naiadacez, ‘ 2 4 4 14 
Alismacez, ’ 3 5 2 3 
Hydrocharidex, 1 1 2 2 
Orchidex, . 8 13 16 54 
Tridex, 2 2 2 8 
Liliacex, . 11 20 she 16 45 
Melanthacez, 4 4 1 5 5 
Juncacee, . 2 13 3 2 23 
Commelynacee, . 1 1 BS 0 0 
Cyperacez, oy) 68 4 8 218 
Graminex, lao 62 49 153 
Filices, 13 ry" ty 47 
Lycopodiacez, 1 4 2 12 
Summary of above. 
1. In M. Bourgeau’s collection, 
819 species, 
349 genera. 
92 orders, 
2, Of the same orders there have been enumerated by Richardson, as 
occurring in British and Russian North America— 
471 genera ; 
2155 species— 
the total flora which he enumerates ; comprising 
118 orders ; 
509 genera ; 
2270 species ; 
viz., 1725 dicotyledons and 554 monocotyledons. 
