ORCHIDS : HOW TO GROW THEM SUCCESSFULLY. 125 



being produced on the newly made pseudobulbs ; a few flowering 

 nodes, however, remain dormant, which flower the following year, in 

 conjunction with the newly made pseudobulbs ; the temperature of 

 the Intermediate house is sufficiently low for this species during the 

 resting season; like the preceding species, 50 degrees is low enough. 

 In all other respects it should be treated as recommended for D. nobile. 

 Its sepals and petals are white, tipped with pink, the lip having a 

 large yellow blotch in the centre. 



This should be purchased at 2s. or 3s. per strong leading pseudo- 

 bulb, and may be bought either newly imported or established. 



DENDROBIUM FORMOSUM GIGANTEUM. 

 From Burmah. 



This is a very handsome Orchid, and the flowers are borne at the 

 apex of the newly formed pseudobulbs directly they are matured, and 

 in large trusses, according to their strength. This species will not 

 grow satisfactorily unless in plenty of warmth, and it must not be 

 taken into a cool temperature to rest but remain in the warmest 

 house the whole year. It must be grown in pans or baskets, and in 

 transferring plants to either it should be done in spring, just as the 

 new growth begins to push forth ; and if in baskets, be suspended in 

 the warmest part of the house in a light position, giving compost and 

 treatment similar to that of D. nobile. Watering should also be done 

 in a similar manner, only that, being kept in a much higher temper- 

 ature during the resting season, it is unable to endure so much drought 

 and should therefore have more water. It flowers during August and 

 September, and the flowers are large and pure white, with the 

 exception of an orange blotch on the lip. Occasionally yellow thrip 

 will attack the young growth, and tobacco powder should immediately 

 be applied for their removal. 



Good plants should be purchased from 3s. to 5s. per strong leading 

 pseudobulb, and it is best to obtain newly imported or semi- established 

 plants. 



DEXDROBIUM PHAL^ixorsis SCHROIDERIAXUM. 



From New Guinea. 



This is a very useful and beautiful autumn-flowering Orchid, 

 similar in habit to D. superbiens and D. bigibbum, and the flowers of 

 this species are produced on spikes issuing from the top of the newly 

 formed pseudobulbs. The flowers vary considerably in colour, some 

 being almost pure white, others a rich dark rosy purple, but the 

 majority are of a rich rosy- tinted shade. The plants require exactly 

 the same culture as that for the last named species. I have always 

 found this plant to do well when suspended from the roof or placed 

 on a shelf in the hottest portion of the house, giving plenty of water 



