BY A. B. WALKOM 13 
very closely allied in these two Series. In- the Rhaetic 
strata of Sweden, Tonkin and North America there are 
also certain species which are identical with or very closely 
allied to species in the Ipswich Series. 
The approximate distribution of Upper Triassic and 
Rhetic floras is shown in figure 3. 
(d) The Jurassic floras. Floras of Lower Jurassic age 
are of widespread occurrence in the Walloon Series and 
Fie, 3—Map showing approximately the distribution of floras of Upper 
Triassic (including Rhetic) Age. 
its equivalents. The typical Walloon Series occurs in 
south-eastern Queensland; on the west of the main 
divide the series of sandstones, etc. extending from Cape 
York to the New South Wales border often referred to as 
the Artesian Series is the equivalent of the Walloon Series, 
as also is the Tiaro Series occurring to the west and south- 
west of Maryborough. 
The plants known from these Series include some 
thirty-seven species, as follows :— 
