592 THE BOOK OF GARDENING. 



between the pots. The plants require a liberal amount of light, 

 but they must be sheltered at all times from the direct rays of 

 the sun. 



Intermediate House Orchids. 



I have thought it best to further split up this section, 

 namely, into the warm intermediate (requiring a temperature 

 of 65<ieg. to 68deg. in summer, and s8deg. to 6odeg. in winter), 

 and the cool intermediate (6odeg. in summer, and 55<ieg. in winter 

 with fire-heat). As these plants are principally natives of tropical 

 South America, and form several classes of the- most beautiful 

 and popular Orchids in cultivation, I will endeavour to note in 

 the following pages the most desirable amongst them. 



Acineta. — -This is a quaint genus, the species of which should 

 be grown in baskets, as the flowers are produced on pendulous 

 spikes, which often push their way through the potting compost 

 and make their appearance through the bottom bars of the 

 basket. They require the temperature of the cool intermediate 

 house, and a potting compost similar to that recommended for 

 Stanhopea. 



Anguloa. — This is a most attractive and useful genus ot 

 plants suitable for cool intermediate house treatment. Most 

 of them are free growing and possess a robust constitution. 

 They require similar potting compost to that recommended for 

 Lycaste. The most useful varieties are A. Clowesii, A. Ruckerii, 

 and A. uniflora. They require a liberal supply of moisture 

 during the growing season and until the growths are matured, 

 after which only sufficient should be given to maintain the bulbs 

 in a plump condition. 



Ansellia africana. — This African species requires the 

 temperature of the warm house. It has long Dendrobium-like 

 growths. The potting compost should consist of two parts 

 fibrous peat and one part of sphagnum moss. A fairly moist 

 atmosphere is required throughout the year. 



Arpophyllum giganteum is more of botanical interest than 

 otherwise. It requires treatment similar to that recommended 

 for Cattleya. 



Barkeria. — The several species of this genus require full 

 exposure to the sun's rays to induce them to flower satisfactorily. 

 The Mexican house, with Lcelia anceps, suits them best. 



Brassavola is now classed under Laelia. 



Burlingtonia. — A dwarf-growing species, suitable for basket 

 culture in the warm intermediate house. 



Catasetum. — A genus of plants always attractive and interesting. 

 There are numerous sorts. They should be grown in baskets 



