5 
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plants climbed the mountains and possessed their lower slopes as 
vegetation wherever a mountain peak has a B rigid climate from 
Nevada to Colorado or from Arizona to British Ataerica though 
or so and many of them are different species though belonging to 
the same genera. The only remnant of the Frigid flora we now 
have in the valleys of the Great Plateau 1s found in ‘he flowers of 
early spring which bloom quickly, bear fruit and die away. f 
such plants are Orogenia, Claytonia, and the sand lily, some onions, 
the sego, most of the phloxes, the yampa, the Fritillaria, many of 
the buttercups, and some others. ; 
As the Temperate plants displaced the Arctic plants in the 
the Temperate ones in all the region south of the Great Basin. A 
few of the Tropical plants, particularly annuals, have even invaded 
the Great Basin as far north as Salt Lake City, though they are 
~ same stock and which dct the deserts of the South like the dead 
