Nine  species  are  cultivated  in  Great  Britain ;  usually,  only  two
in  the  Northern  States  of  America,  The  following  are  the
the  most  important :

(a,)   Trifolium  pratense,          Annual  or  Biennial  Red  Clover.*
"      pratense  perenne,  Perennial   Red   Clover,    Cow


fa)

u

repens.
Dutch  or  English  White  Clover.
w

u

repens,

American  White  Clover.*

(',)

u

hylridum,

Hybrid  or  Alsyke  Clover.
Cfo

u

minus.
Lesser  Yellow  Trefoil,

(ff,)

4

procumbent.
Low  Hop  Trefoil.
(*,)

U

medium,

Cow  or  Marl  Grass,  Southern

•Those  marked  *  are  either  natives  of  America,  or  extensively  naturalized.
182  AGRICULTURAL  TEXT-BOOK.
Clover,  (?)*

(i,)  u  incarnatum,  Crimson  Clover.
(j,)  "  alexandrinum,  Egyptian  Clover.
