398 
to bring this plant regularly into bearing. A second huge 
species of similar use, T. occidentalism J. Hook., occurs in 
Guinea. 
Terfezia Leonis, Tulasne. 
South Europe, North America. This edible truffle, together 
with other species of this and other genera, is deserving of 
naturalization in Australia. 
Tetrag“onia implexicoma, J- Hook. 
Extra-tropic Australia, New Zealand, Chatham’s Island. A 
frutescent widely expanding plant, forming often large 
natural festoons, or trailing and climbing over rocks and 
sandj never away from the coast. As a Spinage-plant it is 
as valuable as the succeeding species. It is well adapted 
for the formation of bowers in arid places. T. trigyna. Banks 
and Soland., seems identical. 
Tetragonia expansa, Murray. 
The New Zealand Spinage, occurring also on many places oi 
the coast and in the desert-interior of Australia. Known 
also from NeAv Caledonia, China, Japan and Valdivia. An 
annual herb, useful as a culinary vegetable, also for binding 
drift- sand. 
Teucrium Marum, V- 
Countries at the Mediterranean Sea. A small somewhat 
shrubby plant, in use for the sake of its scent, containing a 
peculiar Stearopten. T. Scordium, L. from Europe and 
Middle Asia, T. Cliamaedrys, L., T. Folium, L. and T. 
Creticum, L. from South Europe, are occasionally drawn 
into medical use. All these together with many other 
species from various countries are pleasantly odorous. 
Thea Chinensis, Sims.* 
The Tea-shrub of South-eastern Asia. This evergreen and 
ornamental bush has proved quite hardy in our lowland 
clime, where in exposed positions it endures without any 
attention as well our night frosts as also the free access of 
scorching summer winds. But it is in our humid valleys 
with rich alluvial soil and access to springs for irrigation, 
where only the most productive tea-fields can be formed. 
