23. LEGUMINOSiE. 283 



general a plant, that we can safely assume its occurrence 

 in every county. There are certainly many spaces of 

 country, ten or twenty miles in diameter, from which the 

 Anthyllis appears to be wholly absent. Far from frequent 

 on the Highland mountains, above 400 or 500 yards ; but 

 it does occur so high as the locality of Astragalus alpinus, 

 in Aberdeenshire, which I guessed at 2500 feet, and which 

 was afterwards measured by Dr. Dickie, who found it to 

 be between 2400 and 2500 feet. Mr. Gardiner has observed 

 the Anthyllis on the rocks of Stuich-an-lochan, which may 

 somewhat exceed the height of the Astragalus locality on 

 Little Craig-an-dall. 



258. Medicago sativa, Lint}. 



(Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15.) 

 Alien. Frequently sown by farmers, and will maintain 

 •its ground for a few years, where introduced. The number 

 of provinces in which it has been observed, indicates that 

 it is not very fugitive; but nobody seems to hold it a 

 native. 



259. Medicago falcata, Linn. 



Area [1] 2 3 4 * [6] * * * (10 11). 

 South limit in Dorset; S ueacx, Kent. 

 North limit in Norfolk and Cambridgeshire. 

 Estimate of provinces 3. Estimate of counties 7. 

 Latitude 50 — 53. Germanic type of distribution. 

 Agrarian region. Inferagrarian zone. 



Descends .? Ascends } (At a slight altitude.) 



Range of mean annual temperature 51—48. 



