290 THE PRINCIPLES OF FLORICULTURE 



perature averages from 70 to 75 at night, and 90 to 

 95 during the day. There are frequent rains during the 

 growing period. Similar conditions should be maintained 

 in the greenhouses. The plants should have plenty of 

 air but drafts should be avoided. The plants are best 

 grown in baskets or porous pots. 



396. Vanda, botanical classification. (From a native 

 name in India.) There are about twenty species. The 

 most important are : c&rulea, flowers from October to 

 December; teres, flowers from May to September; 

 Kimbcdliana, flowers during September and October; 

 tricolor, flowers from March to May. 



397. Vanda, botanical characters. Vandas are epi- 

 phytes. The flower-clusters are long and graceful, and 

 the individual flowers are mostly large, showy, and of 

 excellent keeping quality. 



Habitat. India and Malaya. 



398. Culture of vanda. Vandas should be grown in 

 baskets near the glass. They like a temperature of 

 from 60 to 65 at night. They require shade after 

 February first. 



SWEET PEAS 



399. Botanical classification. Order, Leguminosese ; 

 genus, Lathyrus (a name used by Theophrastus for some 

 leguminous plant) ; species, odoratus. Sweet peas are 

 classified by habit of plant into climbing and dwarf types. 

 The former is subdivided into the garden and the winter- 

 flowering groups. Another classification of sweet peas 

 is based upon the form of the flower, viz. the open, the 

 hooded and the waved forms. In the open form the 

 standard is flat or slightly reflexed at the sides. The 

 hooded form includes flowers which have the standard 



