EUCALYPTUS TREES. 425 
tinues to prevail. Most clovers come from the tem- 
perate zone of Europe and Asia; only two are indig- 
enous to eastern parts of the United States of North 
America, none occur in Australia, few are found in 
South Africa, several in California and the adjoining 
countries, several also in Chile ; no species is peculiar 
to Japan. 
Trigonella Foenum Greecum, L.—Countries on the 
Mediterranean Sea. The seeds of this annual herb 
find their use in veterinary medicine. 
Trigonella suavissima, Lindley.—Interior of Aus- 
tralia, from the Murray River and its tributaries to 
the vicinity of Shark’s Bay. This perennial, fra- 
grant, clover-like plant proved a good pasture-herb. 
A lithogram illustrating this plant occurs in the work 
on the ‘‘ Plants Indigenous to Victoria.’’ Some of the 
many European, Asian, and African plants of this 
genus deserve our local tests. 
Tripsacum dactyloides, L.— Central and North 
America. A reedy, perennial grass, more ornament- 
al than utilitarian. It is the original Buffalo-grass, 
and attains a height of 7 feet, assuming the aspect of 
maize, It is of inferior value for fodder. 
Triticum vulgare, Villars.* — The Wheat. Appa- 
rently risen through culture from gilops ovata, L., 
and then a South European, North African, and Ori- 
ental plant. This is not the place to enter into de- 
tails about a plant universally known. It may there- 
fore suffice merely to mention that three primary 
varieties must be distinguished between the very nu- 
merous sorts of cultivated wheat: 1. Var. muticum 
(T. hybernum, L.), the Winter Wheat or Unbearded 
Wheat; 2. Var. aristatum (T. estivum, L.), the Sum- 
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