ST. LAWKENCE PLANTS. 



283 



the entire width of the continent, the following families 

 make their appearance : — 



Berberideje 



Nympbjcaceaj 



Capparidese 



CistineaB 



Mulvaceas 



Tiliaceae 



Hypericineas 



Acerinese 



Ampelidea^ 



Geraniacea3 



Oxalideaa 



Rbarnneas 



Terebinthaceas 



Cucurbitaceaa 



Lorantbaceaa 



Paronycbieae 



Jasniineaa 



Apocynea? 



Asclepiaceae 



Convolvulaceas 



Solaneae 



Amarantbaceae 



Aristoloebieae 



Eupborbiaceaa 



Ulmaceae 



Cupulifera3 



Myriceae 



Liliaceaa 



Alismaceaj 



Pontederiaceae 



Restiaceae 



Hydrocbaridese 



Marsiliacese 



SalvinaceaB 



The families which reach the St. Lawrence basin, but 

 do not extend northwards to the Winipeg valley, or enter 

 the western prolongation of that zone, are — 



Menispermaceaj 



Podopbylleae 



Limnantbaceas 



Oxalideae 



Rutaceae 



Lytbrariese 



Cactese 



Hamamelideas 

 Compositaa 



Vernoniacece 

 Acantbacea? 

 Nyctagineae 

 Pbytolacceaa 

 Laurineae 



Saururea3 



Juglandaceae 



Platanaceaa 



Camelineaa 



Hypoxideae 



Dioscoreae 



To give a further view of the accession of families in 

 going southwards, the following are added from Dr. Gray's 

 " Botany of the Northern States " : — 



Magnoliaceae 



Anonaceae 



Cabotabaceaa 



Resedaceae 



Elatinaceas 



Anacardiaceaa 



Hippocastanaceaa 



Melaetomaceae 



Hydrangeas 



Aquifoliaceae 



Ebenaceas 



Bignoniaceae 



Nyssaceaa 



Podostomeae 



Balsamifluae 



Amaryllidaceae 



Haemodoraceas 



Xyridaceas 



In tracing individual species to their northern limits, we 

 did not discover in any one instance that the crest of 

 a water-shed between successive transverse river basins 

 was a boundary to the plant. Many of the more remark- 

 able trees, oaks, &c. flourish in the neighbourhood of 

 Rainy Lake and on the upper part of Eed River, but die 



