IN EXTRA-TROPICAL COUNTRIES. 333 



Nectar sucked by humble bees, which also tends to facilitat e 

 the production of seeds. 



Trifolium reflexum, Linn6. 



North America. The Buffalo or Pennsylvanian Clover. An- 

 nual or biennial ; flower-heads larger than those of the Red 

 Clover ; likes alluvial flats. 



Trifolium repens, Linne * 



The ordinary White Clover. Europe, North Africa, North 

 and Middle Asia, Sub- Arctic America. Perennial. Most 

 valuable as a fodder plant on grazing-land. It has a predi- 

 lection for moist soil, but springs again from dry spots after 

 rain. It likes soil containing lime, prospers on poorer ground 

 than Red Clover, is more nourishing and better digested and 

 less exhaustive to the soil. 



Trifolium resupinatum, Linne. 



The annual Strawberry Clover. From South Europe and 

 North Africa to Persia; also in the Canary Islands and Azores. 

 Admitted here, though annual, as this clover is cultivated with 

 predilection in Upper India; of tall growth and succulent 

 foliage. 



Trifolium spadiceum, Linne. 



Brown Clover. Europe, West Asia. Though only annual 

 or biennial, this has been recommended for wet sandy moor- 

 land, on which it redisseminates itself with readiness. 



Trifolium subrotundum, Hochstetter. 



The Mayad Clover. North and Middle Africa, ascending 

 to 9,000 feet. A perennial species, in its native countries 

 utilised with advantage for Clover cultm-e. This by no means 

 closes the list of the Clovers desirable for introduction, inas- 

 much as about 1 5(1 well-marked species are recognised, many 

 doubtless of value for pasture. But the notes of rural observers 

 on any of these kinds are so sparingly extant that much 

 uncertainty about the yield and nutritive value of the various 

 kinds continues to prevail. Most Clovers come from the 

 temperate zone of Europe and Asia ; only two are indigenous 

 to the eastern of the United States of North America, none 

 occurs in Australia, few are found in South Africa, several in 

 California and the adjoining countries, several also in Chili ; 

 no species is peculiar to Japan. 



