50 FLOR. TELLUR. 



American botanists ! flowers much larger than 

 in last, purpHsh as in all the Sp. Folioles from 

 nearly the same point not properly pinnate. 



200. Comarum (Pane. Pot.) angustifolium 

 Raf. Caule glabro, fol. pinnatis, petiolis vagina- 

 lis nudis, foliolis 5 cuneatis angustis, pectinato 

 serratis, subtus pallidis; florib. term. 2-3 par- 

 vis, petalis ovatis acuminatis — Oregon or N. W, 

 Amer. Semipedal, flowers half size — The above 

 3 species now distinct, appear to have a com- 

 mon origine as deviations of a type ; by calling 

 them varieties we should overlook their charac- 

 ters and this formation of Species. They are a 

 fair example of this phenomenon : or of local 

 deviations in remote clines. 



Whenever plants have long been removed in 

 different continents or botanical regions widely 

 apart, they assume in general a different shape 

 and virtually becomes new species. Therefore 

 Decandole has properly stated that all plants 

 deemed alike in remote regions must be exam- 

 ined again. None of the North American trees 

 and plants are exactly alike to their Asiatic or 

 European types, except among Grasses and 

 Cryptogams, a fact as yet unexplained for these. 

 The boreal plants of both continents have how- 

 ever mostly identic Genera, and many identic 

 species, but South of Canada, the Species and 

 Genera gradually become different or unlike. 



