504 ORCHIDS, 
6in. apart. If there are only a few plants, they may be 
grown in pots. During summer they should be syringed 
about four in the afternoon, at the same time shutting 
the ventilators. The temperature should not fall below 
jodeg. during the night, and water must be given unstint- 
ingly. In winter a temperature of 55deg. to 6o0deg. will 
suffice, and the plants should be kept dry. 
Fig, 118. Flower of Vanda tricolor Patersoni 
(nat. size). 
V. tricolor.—In foliage, habit, and inflorescence, this 
Orchid is very similar to V. suavis; Reichenbach considered 
them both varieties of one species. The chief distinction 
lies in the colour of the flower, V. suavis having a white 
ground, V. tricolor a yellow; but the two are linked by 
intermediate forms. The racemes usually bear about twelve 
