682 SCHOUW'S PHYTO-GEOGKAPHIC KEGIONS. 



Tulip-tree, Horse-chestnut, Eobinias or False Acacias. Among other 

 plants may be mentioned the following ; — Illicium floridanum, Pavia 

 flava, Cassia Tora and C. Marilandica, Kalmia hirsuta, Opuntia vul- 

 garis, Halesia tetraptera, Laurus caroliniensis, L. Sassafras, Oarya 

 aquatica, Liquidambar styraciflua, Carpinus amerieanus, Castanea 

 americana, Pinus Tseda, Chamserops Palmetto. Mean tempera- 

 ture, 59° to 73°. The same plants cidtivated as in the third region. 

 Kice is much cultivated. In the southern district the Sugar-cane is 

 productive ; and in the eastern districts Cotton is grown to a great 

 extent. Dr. Hooker says that the Indian mountains and islands are 

 the true centres of Magnolias. 



The Californian and Oregon districts, in the west of North America, 

 and extending farther north than Kegion 5, have a marked Flora, 

 which requires to be more fully explored. Many showy Polemo- 

 niacese are found here; also Esohscholtzia californica, species of 

 Platystemon, Nemophila, Gilia, CoUinsia, Clarkia, Bartonia, and 

 Eutoca. Many interesting Coniferse also occur, such as Abies Dou- 

 glasii, Pattoniana, Picea nobilis, amabilis, grandis, lasiocarpa, Pinus 

 Lambertiana, Sabiniana, insignis, Jeffreyi, ponderosa, monticola, cali- 

 fornica, Fremontiana, Ooulteri, flexilis, muricata, tuberculata, Libo- 

 cedrus decurrens, Thuja gigantea. Sequoia gigantea, Juniperus deal- 

 bata and occidentalis, Castanea chrysophylla. In the upper Oregon 

 districts Geyer enumerates Umbelliferse, Scrophulariacese, Asphodelese, 

 Polemoniacese, Boraginacese, Vacciniacese, Eanunculacese, Oruciferse, 

 Onagracese, Eosacese, Polygonacese, Labiatse, Oaryophyllaceas, Com- 

 positee, Graminese, species of Mahonia, Lewisia, Geranium, Eibes, Lo- 

 belia, Clintonia, Pentstemon, Camassa, Horkelia, and Eriogonum. The 

 bulk of the wood in upper Oregon is composed of Pinus ponderosa, 

 and along with it occur Abies balsamea, canadensis, Douglasii, nobilis, 

 and alba. In the basaltic plains of upper Oregon, Geyer says there 

 are no Papaveraceae, Urticacese, Violacese, Vitacese, Solanacese, Jas- 

 minacese, Amaranthacese, Eleagnacese, Oxalidacese. In Vancouver's 

 Island there are many interesting Pines and Oaks, also Ehododendron 

 macrophyllum. 



6. The Eegion of Ternstroemiacese and Celastracese, or the Chinese 

 Japanese Flora (Ksempfer's Eegion). — This region is as yet too little 

 known to enable us to determine accurately its characteristic features. 

 It embraces the eastern temperate part of the old continent, namely, 

 Japan, the north of China, and Chinese Tartary, between lat. 30° and 

 40° north. Its vegetation appears to occupy a middle place between 

 that of Europe and that of North America, approaching more to the 

 tropical than to the European. It has an affinity to the Indian Flora, 

 as shown by the occurrence of Bananas, Pabns, Zingiberaceas, Ano- 

 nacese, Sapindacese, and Cycadacese. The genera Camellia, Thea 



