(H3) 



are entirely absent. Most of the tropical forms are 

 epiphytes, that is, they grow upon trees and usually have 

 bulb-like or thickened stems and fleshy leaves for the 

 conservation of their water supply, as, from their habitat, 

 this supply must be precarious. In temperate regions 

 nearly all of the species are terrestrial, and have thin leaves, 

 the soil about their roots serving to protect them from the 

 cold and also giving them a more constant water supply; 

 they do not, therefore, need pseudobulbs or thickened 

 stems. Coming from all parts of the world as they do, 

 their blooming time varies greatly, so that at almost any 

 time of the year, be it winter or summer, some of these 

 interesting plants may be found in bloom. 



This house is the gift of Messrs. Daniel and Murry 

 Guggenheim. It has a length of 140 feet and a breadth 

 of 29 feet. It is divided into two compartments, A and B. 



In compartment A are the orchids requiring cool condi- 

 tions. Here will be found : Coelogyne cristata and Paphioped- 

 ilum insigne, of the Himalayan region, the latter species with 

 many color variations, and one of the exceptions in a 

 genus usually requiring the conditions of a stove house; 

 some species of the genus Epidendrum; Lycaste, an Ameri- 

 can genus; Odontoglossum, also of America; Oncidium, 

 a large genus of tropical America, with a maximum de- 

 velopment in South America; Masdevallia, in large part, a 

 genus of great altitudes in the American tropics; Pleurothal- 

 lis, with much the same distribution as the preceding genus, 

 many of the species being very small, some only a half 

 inch tall; and Pleione, of the Old World. 



In compartment B are those requiring intermediate 

 conditions as to temperature. Here, among others, will 

 be found the genera: Cattleya, in most part, native of 

 America only; Epidendrum, in part, also a large American 

 group; Laelia, of American distribution; and Oncidium, 

 in part, likewise American. 



House No. 6. This house is the same length as house 2, 

 but is only about 21 feet wide, and is a little lower. It is 

 also divided into two compartments, A and B. 



