552 MR. G. BENTHAM ON COMPOSIT X. 
1. Connexion between the Mediterranean and the 
South-African Regions. 
This is very much less prominent than that between the Mexican 
and the Chilian regions. Identical species are very few, if any, 
besides colonists ; and if we omit cosmopolitan genera or those 
generally distributed over the tropical as well as the temperate 
regions of the Old World, we have only the following nine genera 
repeated north and south of the intermediate tropical-African 
region :— 
Nolletia ... 3 southern, 1 Algerine species. 
Ifloga ...... 7 » 1 East- and West-Mediterranean 
species. 
Lasiopogon 1 = 1 East- Mediterranean species. 
Leyssera ... 3 1 West-Mediterranean species. 
Jphiona ... 8 » 10 Mediterranean and tropical species. 
Pegolettia. . 2 » 1 North-African subtropical species. 
Geigera ... 8 » 2 » 5 " 
Matricaria 10 = 12 Mediterranean and Europeo- Asiatic 
species. 
Othonnopsis 5 = 3 North-African and Oriental species. 
Compositee, as already observed, do not appear to have formed 
part of that curious West-European flora, consisting in a great 
measure of repetitions or representations of South-African races, 
as exemplified in Erice, Grenistese, Lobelias, &e. The connexion, 
such as it is, is rather East-African than Western. Several 
European Composite weeds have become quite naturalized in 
South Africa; whilst the South-African ones received in return 
are but very few, established in very restricted localities. 
2. Australian connexions with the Old World. 
First with South Africa. Besides the cosmopolitan genera 
Senecio and Gnaphalium and a few cosmopolitan or subtropical 
weeds, the following genera are common to the two regions :— 
Brachycome... 36 Australian, 1 South-African species. 
Helipterum ... 30 n: 12 a Ps 
Helichrysum . 52 » 137 : m 
Cassinia ... .. 13 m 1 » a 
Athrizia ...... 5 » 6 Ws a 
Cotula. 9 35 22 » a 
Although we have here only six characteristic genera common 
to Australia and South Africa, or seven if we include Senecio, 
