Trifolium alexandrinum

from The Collaborative International Dictionary of English v.0.48
Berseem \Ber*seem"\, n. [Ar. bersh[imac]m clover.]
   An Egyptian clover ({Trifolium alexandrinum}) extensively
   cultivated as a forage plant and soil-renewing crop in the
   alkaline soils of the Nile valley, and now introduced into
   the southwestern United States. It is more succulent than
   other clovers or than alfalfa. Called also {Egyptian clover}.
   [Webster 1913 Suppl.] Berserk
    

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