376 E. C. ANDREWS. 
Smithia, Zornia, Pycnospora, Uraria, Alysicarpus, Lespe- 
deza, Abrus, Clitoria, Uraria, Canavalia, Dolichos, Dun- 
baria, Rhynchosia, EHriosema, Pongamia, Ceesalpinia, 
Cynometra, and Hntada, in Australia, all the species of 
which are either pan-tropical, or are so closely related to 
species in other continents as to suggest recent derivation 
thence. 
In the previous chapter evidence has been adduced indi- 
cating the origin of these genera in Australia as waifs. 
Canavalia also is a waif in New Zealand, while Kdwardsia 
appears to be a form indigenous to New Zealand, and one 
which has been carried thence to Chili, Hawaii, and Tahiti, * 
the presence of Edwardsia also in the Isle of Bourbon, and 
further India, suggests a home for this genus in the Old 
World tropics. 
From what has just been stated it is evident that the 
number of genera really indigenous in Australia, and yet 
common to the tropical world, is decidedly limited, while 
Canavalia is the only pan-tropical genus represented in 
New Zealand. This gains an added significance from the 
fact that vast genera such as Inga, Calliandra, Mimosa, 
Astragalus, and Macherium, belonging to America, Africa, 
and Asia, as well as important genera such as Heematoxylon, 
Copaiba, Colutea, and Ulex, are absent entirely from these 
regions, except as colonists. Reference has been made 
already to this absence of pan-tropical genera from New 
Zealand in the chapter on ‘Principles of Geographical 
Distribution.”’ 
GENERA OF LEGUMINOSA ENDEMIC OR INDIGENOUS TO REGIONS 
OTHER THAN AUSTRALIA AND NEW ZEALAND. 
South Africa.—This remarkable region has been adduced 
as a case analogous to that of Australia with respect to its 
1 (35), pp. 147-1651. 
