MEDICAGO FALCATA, A YELLOW-FLOWERED ALFALFA. 5 



Table I. — Seasonal and normal annual precipitation and maximum, minimum, 

 and mean annual temperatures of points in Russia and Siberia and in some 

 of the Northicestern States. 





Precipitation (inches). 



Temperature (°r.) 



Locality. 



Winter. 



Spring. 



Sum- 

 mer. 



Au- 

 tumn. 



Annual. 



Maxi- 

 mum. 



Mini- 

 mum. 



Nor- 

 mal 

 annual. 



Russia and Siberia: 

 Charonte 



1 

 lto2 

 3 to 4 



1 



1 

 3 to 4 



1 

 3 to 4 

 3 to 4 



1 



1.79 

 1.64 

 1.65 



1.24 

 1.39 

 1.66 

 1.88 

 1.52 



1.40 

 1.57 

 1.36 

 .90 



1.74 

 1.34 



lto2 

 2 to 3 

 4 to 6 

 lto2 



2 to 3 



3 to 4 

 lto2 

 3 to 4 

 3 to 4 

 lto2 



3.58 

 5.57 



4.82 



4.12 

 4.70 

 5.42 

 5.66 

 5.24 



5.44 

 6.56 

 6.26 

 5.03 



6.85 

 6.08 



8 to 12 

 6 to 8 

 6 to 8 



8 to 12 

 6 to 8 

 4 to 6 



3 to 4 



4 to 6 

 8 to 12 



4 to 6 



6.00 

 4.65 

 4.02 



7.44 

 7.17 

 7.66 

 9.29 

 10.07 



7.44 

 9.36 

 8.25 

 8.01 



10.03 

 8.39 



2 to 3 

 4to6 

 4 to 6 

 lto2 



2 to 3 



3 to 4 

 2to3 



4 to 6 

 4 to 6 

 2 to 3 



2.30 

 3.10 

 2.04 



3.26 

 2.32 

 2.90 

 3.19 

 3.33 



2.35 

 3.61 



2.82 

 2.81 



3.84 

 3.05 



12 to 18 

 13tol9 

 19 to 28 

 lltol7 

 lltolo 



13 to 18 

 7 to 9 



14 to 20 

 18 to 26 

 8 to 12 



13.67 

 14.96 

 12.53 



16.06 

 15.58 

 17.64 

 20.02 

 20.16 



16.63 

 21.10 

 18.69 

 16.75 



22.46 

 18.86 



97.5 

 103 



97.5 

 103 



98.5 

 105.5 

 106.5 

 108 



95 

 102 



108 

 112 

 113 



109 

 110 

 107 

 106 

 103 



110 

 108 

 106 

 108 



106 

 107 



-53 

 -51 

 -40 

 -58 

 -56 

 -43 

 -51 

 -40 

 -60 

 -84 



-57 

 -49 

 -56 



-47 

 -47 

 -45 

 -40 

 -44 



-40 



-43 

 -40 

 -45 



-38 

 -35 



32 



Irkutsk . . 



32 



Kharkof 



42 



Lake Baikal region 



32 



Omsk 



32 



Orenburg 



39 



Semipalatinsk 



39 



Saratof 



42 



Tomsk 



32 



Yakutsk 



14 



Montana: 



Havre 



41.9 



Billings 



47.2 



Glasgow 



40.2 



North Dakota: 



Minot 



38.8 



Dickinson 



40.4 



Bismarck 



40.0 



Jamestown... . 



39.9 



Devils Lake 



36.4 



South Dakota: 



Pierre 



45.6 



Huron 



42.1 



Rapid City 



45.2 



Highmore. 



44.7 



Nebraska: 



Valentine 



46.3 





48.2 







NATURAL DISTRIBUTION. 



In both Europe and Asia Medicago falcatci has a very wide distri- 

 bution, as the previous list and accompanying map would indicate. 

 (Fig. 1.) The data from which this map was prepared were ob- 

 tained from various published floras of Europe and Asia and from 

 correspondents and explorers of the Department of Agriculture. 

 The points where the species has been reported in literature as being 

 found growing wild are designated, as well as those localities from 

 which seed has been collected from plants growing without cultiva- 

 tion and sent to this country. To what extent the distribution of 

 Medicago falcata is strictly a natural one can be estimated only 

 broadly. However, the chances are very much in favor of the species 

 being truly indigenous over a large portion of its present range, wdth 

 the possible exception of western Europe, since its dissemination 

 through the agency of man has been very largely incidental. 



Outlining the disti-ibution of Medicago falcata by means of the 

 data that are available, it is found to occur in moist western England, 

 in Norway to the sixtieth par-iillcl of latitude, and generally through- 

 out Sweden. Tt is common in rentral and southern T^ussia and in 

 Austria, France, Spain, and oth(!i- Medit(^rranean countries. In 

 Siberia its i-ange extenrls north at least to the sixty-tliird degree of 



