XN \ 1. 
Chari. K s Austin (Gardner. 
An almost parallel ease is exhibited by the Goodeniaceae, but here eacli 
genus is represented in Australia : — 
VelUia (18) Australia 10 
Symphyobasifi (2) Australia .... .... .... .... 2 
Goodenia (*01) Australia 56 
Calogyne (5) Australia (one extending to the Philip- 
pines) .... 3 
Leschenaultia (19) Australia .... .... .... 17 
Anthotiuni (2) S.W. Australia 
Selliera (2) One endemic in S.W. Austr., the 
other extending from Victoria and 
Tasmania to N. Zealand and Chile I 
Pentaptilon (1) S.W. Australia .... ■■■■ 1 
Catosperma (1) N. Australia 1 
Diaspasis (1) S.W. Australia .... .... .... 1 
Scaevola (83) One trojiics generally ; 22 Pacific and 
Melanesian (excl. Australia) ; Austr. 50 
Verreauxia (3) S.W. Australia .... . .. . .. 3 
Danipiera (59) Australia .... .... ... 48 
This family represents the true Australian Element. It agrees with 
the definition given by Diels, for each genus is represented in Australia, only 
three having extraterritorial representatives. The species connecting S.E. 
Australia with Chile is again interesting. It will be observed that each genus 
is represented in Western Australia. Apart from Selliera and Calogyne, 
the migrant species are all species of Scaevola, entirely or chiefly of maritime 
distribution. 
In addition to the three endemic families — the Tremandraceae, Byblida- 
ceae, and Cephalotaceae, there are a number of groups with a rank less than that 
of family which are endemic. Examples are : — 
Liliaceae-Xanthorrhoeae 
Haemodoraceae-Conostylidiae 
Pittosporaceae-Billardiereae 
Rutaceae-Eriastemoninae-Nematolepidiuae-Diplolaeninae. 
fkiphorbiaceae-Stenolobeao 
Myrtaceae-Chamaelaucieao 
Verbenaceae-Chloanthoideae 
Labiatae-Prostantheroideae 
Oompositae-Angianthinae 
The number of genera is too large for inclusion here, but examples an' to 
bo found in many families. The total number has not been accurately com- 
puted. 
In every case, the Australian Element is most richly developed within 
the South-West Province ; its real home today is the large triangular-crescentic 
area bord(>r('d by the coastline from Shark I3ay to Israelite Bay, and extending 
inland to the 175 mm. (7 in.) winter isoliyct. Within this area the autoch- 
thonian flora finds its highest expression in the sandy areas, either on the sand 
iK'aths, or in the sandy swamplands of tlie south-western littoral. W hile many 
of its groups are strictly endemic within the area, others are found in Eastern 
Australia, esj)ecially in Southern Quet'iisland and South Australia, where 
tluiy occur as psammophytes. They arc foum^l also in the littoral region 
of South Australia, whore their occurrence can be explained by littoral migra- 
tion, but their occurnnce in soutlu'rn Queensland and parts of New South Wales 
is more difficult of explanation. 
