342 : E. C. ANDREWS. 
Table of Geographical Distribution of Leguminose—continued. ! 
Country. oe fale "Boseae Remarks and Authorities. 
Germany ras sat 31 131 | Garcke, 1895. 
Italy ... 4; - 42 410 | Arcangeli, 1894. 
North America (exclu- 
sive of Mexico)... 55 700 | Britten and Brown, 1897. 
Duh Ean AS sat ee 31 45 | Seeman. 
New Caledonia oe 43 100 | A list quite incomplete, from 
Helmsley’s Manuscript. 
Queensland ... Ws 95 470 | Bailey, 1902. 
New South Wales ... 59 385 | Maiden and Betche. In Manu- 
ak script only. 
Tasmania... 2s 20 59 | Rodway. 
1 Lists only approximate. Some of the works consulted are not only 
from forty to fifty years old, but have not been brought up to date. It 
is highly probable that the actual numbers of species in Brazil, India, and 
Africa are much greater than as here recorded. 
Various tribes and genera are characteristic of the tropics, 
for example, genera such as Dalbergia, Macherium, Lon- 
chocarpus, Indigofera, Bauhinia, Entada, Abrus, Afzelia, 
Mucuna, A’schynomene, Parkia, Calliandra, Albizzia, 
Pithecolobium, Inga, Mimosa, and Tephrosia. Other genera 
again, such as Acacia, Cassia, and Crotalaria, appear to 
have their real homes in the tropics but occur, nevertheless, 
with few exceptions, as xerophytes in many warm tem- 
perate regions. The tropical forms of these genera, con- 
sidered individually, bear a much greater resemblance to 
each other than to the xeropbytic forms. Moreover, the 
xerophytes of these genera appear to have developed along 
divergent lines in different temperate regions. For example, 
the Acacias of South Africa vary considerably from those 
of Australia, so also the xerophytic Cassias of Australia 
are peculiar to that country. And in like manner the 
Podalyrieze and Genistez of South Africa, Eurasia, and 
Australia, differ widely in these contrasted regions. 
This may be stated another way: Thus various genera, 
such as Cassia, Acacia, Crotalaria and Indigofera, are widely 
diffused throughout the tropics apparently as uniform 
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