SCHOUW'S PHYTO-GEOGRAPHIC REGIONS. 681 



canariensis, are found here. Among the plants of the Mediterranean 

 ildra, requiring both a warm summer and a warm winter, may be 

 enumerated Oleander, Aloe, Chamserops humilis. Phoenix dactylifera, 

 ■Capparis, Ceratonia Siliqua, Cyclamen Clusii, Ornithogalum arabicum, 

 arborescent species of Dianthus, several Ferns ; and of cultivated 

 plants, Eicinus communis, Egg-plant, Hibiscus esculentus. Capsicum, 

 Acacia Farnesiana, Phaseolus Caracalla, Sterculia platanifolia, and 

 Schinus Molle. Of 596 species inhabiting Madeira and Porto Santo, 

 108 are endemic ; and of the 108, 28 are common to Madeira and the 

 Azores. Of the Azorean species, 4:-5ths are European, and may .have 

 been carried by man. Of the remaining 5th, nearly the whole are 

 peculiar to the Azores or to the Archipelago of the Atlantic islands, 

 which includes also Madeira and the Canaries. Mean temperature, 

 55° to 73° F. Cultivated plants are the same as in the second region, 

 with the addition of Rice, Guinea Corn, Italian Millet, Fig, Almond, 

 •Orange and Lemon, Water Melon, Olive, Cotton. Rye and Buck- 

 "wheat are only cultivated in the mountainous regions. 



4. The region of Asters and Solidagos, or the Flora of the northern 

 part of North America (Michaux's Region). — This is marked by the great 

 number of species belonging to these two genera, by the great variety 

 ■oi Oaks and Firs, the small number of Cruciferse and Umbelliferse, 

 ■Cichoracese and Cynarocephalae, the total absence of the genus Erica, or 

 heath, and the presence of more numerous species of Vaccinium, or 

 whortleberry, than are to be met with in Europe. It comprehends the 

 whole of the eastern part of North America, with the exception of what 

 belongs to the first region. It has been divided into two provinces : — 

 l.jThat of the south, which eribraces the Floridas, Alabama, Mississippi, 

 Louisiana, Georgia, and the Carolinas, 54° to 72°. 2. That of the 

 north, which includes the other States of North America, such as Vir- 

 ginia, Pennsylvania, New York, etc. Mean temperature, 9° to 59° F. 

 In the northern districts, down to the parallels of 55° or 50°, there is 

 no cultivation. South of this line the cultivation is the same as in 

 the second region. Maize is cultivated to a greater extent in North 

 America than in Europe. 



5. The region of Magnolias, or the southern North American 

 Flora (Pursh's Region). — This comprises the most southern parts of 

 North America, between 36° and 30°. The tropical forms which show 

 themselves more frequently than on a similar parallel of the old con- 

 tinent, are the chief feature in the vegetation. Thus we meet with 

 Anonacese, Sapindacese, Melastomaceae, Cactacese, and Zingiberacese. 

 This region has fewer Labiatse and Caryophyllacese than occur in cor- 

 responding latitudes in the Old World. It presents more trees with 

 fine blossoms, and shining, sometimes pinnated, leaves, as Magnolia, 



