THE MOST USEFUL ORCHIDS 167 



the year than at other times. Thrips sometimes attack the foHage, 

 and a sharp lookout must be kept for them, or the leaves will 

 soon be disfigured and the vitality of the plant impaired. 



Best Species and Hybrids 



Z. CRiNiTUM flowers in late Winter or Spring, and is about 

 eighteen inches high. Several flowers are carried on the erect two- 

 feet spikes, and individually they are about three inches across. 

 The sepals and petals are green with brown bars ; lip white, 

 heavily veined with violet-blue or red-purple. 



Z. INTERMEDIUM is a very fine garden plant, and every 

 amateur who takes up Orchid culture should obtain it. The 

 green sepals and petals are shaded with brown, and the large lip is 

 white, with radiating lines of deep violet or purple. 



Z. Mackayi is a fine species, with yellowish green sepals and 

 petals marked with purple-brown ; lip white, with radiating marks 

 of violet-purple. Flowers about three inches across, and fragrant. 



Z. MAXiLLARE is scarcely so tall as the species already named. 

 Its flowers are about two and a half inches across ; sepals and 

 petals green, marked with red-brown ; lip deep violet-blue, shading 

 to pale blue or white at the margin. Z. m. Gautieri has rather 

 larger flowers, with deep purple colouring. 



The best hybrids are Z. Clayi [Z. crinitum x Z. maxUlare\ 

 Z. Perrenoudi [Z, intermedium x Z. maxillare)^ Z. Sanderi [Z. 

 Mackayi x Z. Perrenoudi)^ and Z. Sedeni [Z. Mackayi x Z. 

 maxi/Iare). 



