DEVELOPMENT AND DISTRIBUTION OF LEGUMINOSZ. 343 
primary types. Hach temperate region adjoining tropical 
lands has its peculiar species of these genera, the species 
in each genus showing marked divergence in different 
directions in different temperate regions from the common or 
uniform types in the tropics, the endemic species as a whole 
of each temperate region exhibiting likenesses to the 
tropical types rather than to those of contrasted extra- 
tropical regions. Similar reasoning applies to the case of 
the various endemic genera in the various tribes. 
In New Zealand, the endemic genera are three in number 
comprising twenty-two out of a total number of twenty- 
nine species of Leguminose in that country. This paucity 
of species appears remarkable at first sight, but its discus- 
Sion is reserved for a subsequent chapter. It is sufficient, 
at this stage, to state that the three endemic genera are 
xerophytes, belonging to the tribe Galegeze, which tribe, 
moreover, includes five out of the total of seven genera in 
the Island. 
Australia contains ninety-seven genera of which thirty- 
five are endemic. These peculiar forms are decidedly 
vigorous and aggressive in the main, and, with the excep- 
tion of a few genera, they are almost all xerophytes. 
Exceptions are to be found in the monotypic genera Castano- 
spermum, Podopetalum, and Barklya. In the Podalyrieze 
there are twenty endemic genera comprising four hundred 
species. The genus Pultenza alone contains about one 
hundred species. Genistez is also well represented by 
xerophytic types such as Platylobium, Hovea, Bossizea, and 
Templetonia. Labichea and Petalostyles, also in Cassiez, 
are xerophytes. Both the Australian Podalyrieze and 
Genisteze form special subtribes. 
South Africa, similarly to Australia, is rich in endemic 
genera, especially in peculiar subtribes belonging to Poda- 
lyriee and Genisteze. But whereas Australia is the strong- 
