IN EXTRA-TROPICAt COUNTRIES. 331 



Trioholaena rosea, Nees. 



South Africa. This perennial grass promises to become valu- 

 able for desert country, together with T. Teneriffse and other 

 congeners. 



Trifolium ag^rarium, Linne. 



The perennial Yellow Clover or Hop Clover. All Europe, 

 Western Asia. Of considerable value in sandy soil as a fodder 

 herb. It is easily naturalised. 



Trifolium Alexandr-inum, Linne.* 



The Bersin Clover. North-Eastern Africa, South-Western 

 Asia, South Europe. Much grown for forage in Egypt, 

 where it is used as the main fodder; On the Nile it gives 

 three green crops during the season, each up to 2 feet high. 

 Seeds of this and other clovers must be sifted to free them 

 from the destructive Dodder plants or Cuscutas. About 20 

 lbs. of seeds are re(juired f or an acre (Morton). Eecorded as 

 annual. 



Trifolium Alpestre, Idnng, 



Europe, West Asia. Perennial. Content with lighter soil 

 than that needed for most Clovers, but its constituents must 

 be fairly marly or limy. It is early out and very palatable 

 (Langiethal). 



Trifolium fragiferum, Linn^. 



The Strawberry Clover. Europe, North Africa, Middle and 

 North Asia. A perennial species, well adapted for clay-soils. 

 Foliage closer and more tender than that of the White Clover, 

 but its vegetation later (Langethal). Morton recommends it 

 for moist sandy soil. 



Trifolium hybridum, Linn^.* 



The Alsike Clover. IJurope, North Africa, Western Asia. 

 A valuable perennial pasture-herb, particularly for swampy 

 localities. It succeeds where the ground becomes too sandy 

 for Lucerne and too wet for Red Clover, but does not with- 

 stand drought so well, while it produces a heavier bulk of 

 forage than White Clover, and maintains its ground when such 

 has become too much exhausted for other Clovers. The seed 

 being very small, less than half the quantity is required for the 

 same area than of Eed Clover. 



TrifoUum incaruatjim, Linne. 



The Ca,rnation Clover ; also called Crimson or Italian Clover. 



