REGIONS AND AREAS OF DISTRIBUTION. 489 
species. Helenioidewm have 57 genera, containing nearly 300 
species, exclusively American; one genus, Flaveria, of 7 American 
species, has one of them extending into Australia, another, of four 
American species, is represented by 1 in South Africa, and a third, 
Cadiscus, is a monotypic South-African plant. Three more tribes 
have a strong American Propondoanpes both in their firey and 
in their subtribes : RRAK bees = ? genera and * pus species 
z E^ * species in the Old World; 
125 963 
Helianthoidee ¡3% bcd genera and j;; Species, against B5 
Old- World deum and i7. 105 L 
genera and Y == 3 species, against =, 15 O1d-World genera and 9 qg Species. 
Three more large tribes are more ed distributed : Asteroides 
American, against n genera and 1 
k S 
species; and Mutisiacez 5 -; American 
LI . 44 
have $ E ? New-World genera and È Ed species, against ;; genera 
and d species in the Old World, showing still an American 
a bas: is slightly diee in des with 
as genera and =~ species, against 2 * genera and $ EI 7 Species in the 
ils 
Old World, "d still more so in cag edet with 5 American 
genera and 15 265 species, against 5; ° genera and 255 E * species in the Old 
World. The remaining tribes are much more decidedly charac- 
teristic of the Old World. Of Inuloidee the largest, the nine 
subtribes are all of the Old World, three only of them being 
A dieat h America in companya few numbers ; p the 
genera are ij, 3; and the species on in the Old ur to E and 
157 ; 
1096 In the New. a bares zi genera and $5 oe Species in 
the Old World, to E 1 genera and 2 E 5 T in the New. Cyna- 
roideæ, with all the 37 genera and“ species in the Old World, 
are represented in America by only s species, belonging to 3 of 
those genera. Calendulacew with 7 of its 8 genera, including 102 
species, in the Old World, has a single monotypie American genus; 
aud the 17 genera and 237 species of Arctotidece are exclusively of 
the Old World. Tosum up in a few words, Composite as a whole 
are not very unequally distributed between the two divisions of the 
globe; and of the 13 tribes, 12 are common to the two, and only 
one restricted to one of them. But out of 730 genera 78 only 
are common to the two, showing already a far greater difference 
