374 Analysis of Scientific Books and Memoirs. 



Diosmeas, separates it from most other regions. The tropical part of New 

 Holland, according to R. Brown, can hardly be united to this, but must 

 be either a particular region, whose Flora resembles that of the Indian 

 Flora, or else a province of this latter region. 



XV. (Regnum Mestmbryanlhemorum et Stapeliarum.) This includes 

 the southern extremity of Africa, the Flora of which is distinguished by a 

 high degree of peculiarity. By the families Pruteacece, Restiaceee, Poly* 

 galeae, Diosmece, it distinguishes itself from most others, excepting that of 

 New Holland, and from this it is distinguished by the two numerous 

 genera Mesemhryanthemum and Stapelia, and by the family Ericacea, 

 which is here more numerous than any where else. There belong, more- 

 over, to the characteristic of this region, the many Ifideoe, Geraniew, 

 Oxalidea, and the extraordinary large number of Composite. On the 

 other hand, there grow here, as well as in New Holland, but only very 

 sparingly, these characteristic forms of the northern Temperate Zone, 

 Crucijerw, Ranuncuhceae, Rosacew, Umbelliferoe, Caryophyllece. 



XVI. {Regnum Africa occidentalis.) We know only Guinea and 

 Congo, of which the vegetation, as has already been remarked, has a very 

 low degree of peculiarity, and is a mixture of the Floras of Asia and Ame- 

 rica, though it resembles most that of Asia. The American tropical fa- 

 milies, Nopalew, Piperaceae, Palmce, Passiflorew, are either entirely want- 

 ing, or occur sparingly ; Leguminosa? are more numerous than in America. 

 Above two-thirds of the genera, and some of the species of Guinea, are 

 found also in East India. On the other hand, this region approaches 

 America, in possessing many Rubiacece, also in the genera Schivenkia, 

 Elais, Paullinia, Malpighia, and several more which are wanting in Asia, 

 and in several species which it has in common with America. A con- 

 siderable number of Gramina and Cyperacea, with the peculiar genus 

 Adansonia, belong to the characteristics of this country, but I dare not 

 name the region from thence. The interior of Africa is unknown to us. 



XVII. {Regnum Africa? orientali.s.) Of the east coast of Africa, and 

 the islands adjacent, we know tolerably well the islands of Bourbon and 

 France ; Madagascar but little, and the east coast itself, scarcely at all. 

 The Flora of the two first mentioned islands has a considerable resem- 

 blance to that of India. Amongst 290 known genera, 196 = §j are found 

 also in India, and of the species, not a few are likewise Indian ; many of 

 these may, however, have been introduced by the constant intercourse 

 there is between the two parts of the globe. Numerous in species are the ge- 

 nera Eugenia, Ficus, Urtica, Euphorbia, Hedysarum, Panicum, Andropo- 

 gon, Sida, Pandanus, Dracaena, Conyza, which, for the greater part, have 

 also many species in India. In Ferns these islands are particularly rich. On 

 the other hand, their Flora differs considerably from the South African ; 

 it has, however, some resemblance, in single representatives, of the Cape 

 genera Erica, Ixia, Gladiolus, Rlceria, Mcsembryanthemum, Seriphium, 



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