GENEEAL EEPOET. 
xlvii 
cent, belong to the plants of widest range. The flora of the Wahsatch and 
Uintas contains 75 per cent, of the arctic and 81 per cent, of the subarctic 
species ; 63 per cent, of the first and one-half of the last are also upon the 
Atlantic side of the continent. 
Among the 101 alpine and 77 subalpine species there is a comparatively 
small proportion of the arctic or higher northern plants. But 4G ai-ctic 
species were collected in alpine localities and but 19 others could even be 
considered as subalpine, while but 20 of the subarctic species were either 
alpine or approaching it. 
In regard to the range of the genera but little can l)e said. Of the 439 
genera of the Catalogue 148, including 288 species, are noi found in llie 
United States east of the Mississippi. Of the remaining gcneni, which are 
thus found, 109 have their 146 species also all eastern, 96 with 297 sj^ecies 
include among them none that occur east of the Mississippi, and 8(; nic 
divided in this respect, including 182 eastern and 323 wcslcrn s[)ecies. 
No attempt has been made at giving the range of s})ccies beyond the 
limits of North America. Mr. Olney states that of tlie Tody -five sjx'cics ol 
CareXy named in the Catalogue, fourteen are found in both Europe and Asia, 
five in Europe only, two in Asia only, and two in South America, ofA\ hi<-h 
one also occurs in Europe and Asia. Two of these European yi)ecies are for 
the first time identified as American in this collection. The range of the 
mosses only is given as fully as it could be ascertained. 
Ceyptogamic Flora. The atmospheric conditions are incoinpatil)le 
with even an ordinary development of cryptogamic ve<j:etati()n in the Basin. 
Ferns are rare, occasionally found in tlie higher mounlains hnl in nuiiiy oi' 
the ranges wholly absent. In the Wahsatch nnd Uintas tlicy are more iVc- 
quent and in a larger number of species. Only twelve species were eoUecled, 
five of which were confined to Utah. Nine of these ranuc tiom the Atlaiitic 
or from the Great Lakes to the Pacific, ol' which three are arctic ami two 
subarctic. 
No oi)portunity for the collection of mosses was neir!ect<'d and the 
material has been most patiently and thoroughly elatH<ratc(l by Mr. James, 
who returns an unexpected nundxn' of species. Some of them, like the 
Grimmia^ were attached to the driest sim-lmrned rocks of the valleys, otlx'rs 
were found only in early spring under sage-brush and in Hie meadows near 
Carson City. Far the larger number were collected on the wet banks of 
