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Nature and Habits of Orchids. 



ODONTOGLOSSUM GRANDE. 



NATURE AND HABITS OF ORCHIDS. 



The primary division of orchids is into two general classes, — those 

 growing upon trees, and those growing upon the ground ; in other words, 

 epiphytal and terrestrial. In hot countries, the species are generally epi- 

 phytes ; in temperate regions, we find only the terrestrial classes. These 

 rules are not, however, without some exceptions : epiphytes often grow upon 



