THE ORCHID GENERA 



Humeanum, 0. aspersum, and Duvivierianum should be 

 grown in shallow pans, and suspended in the cool house. 

 Others, as 0. blandum, 0. grande, 0. Harryanum, 0. 

 hastilabium, 0. Insleyii y 0. Kramerii, 0. loeve, 0. noevium, 

 and 0. pulchellum thrive well in the cool house in 

 summer, but prefer the warmth of the intermediate 

 house during winter. For 0. citrosmum, owing to its 

 spikes being pendulous, baskets or shallow pans that can 

 be suspended from the roof are better than flower pots. 

 It is one of the few Odontoglossums which require a 

 warm temperature. Grow the plant with the Mexican 

 Laelias, choosing a light position, and near to the venti- 

 lator, if possible, so that it can be given a little extra 

 air at night. Afford plenty of water when growing, 

 and, immediately the new growths are properly matured, 

 remove the plant to a cooler and drier temperature, and 

 keep the soil fairly dry until the flower spikes appear in 

 the spring. When really well grown, few plants are 

 more beautiful at flowering-time, or have a more distinct 

 appearance. It is a Mexican species. 



0. Londesboroughianum is another Mexican Orchid of 

 great merit, flowering in the middle of winter and lasting 

 several weeks in perfection ; like the preceding species 

 it requires warmth, delighting in sun-heat and light. A 

 collector stated that he found plants growing up un- 

 shaded rocks, the temperature in the dry season being 

 no° by day, and 55 by night. It is of rambling habit, 

 and a suitable arrangement may be provided by wiring 

 the rhizome to a piece of tree-fern, or on a large block 

 of wood with a thin coating of moss, and suspending it 

 close up to the roof glass of the house. A vinery pro- 

 bably would suit it, choosing a place where the foliage 

 was scanty. The distinct 0. coronarium and its variety 

 miniatum are not compact growers, for each new growth 

 extends from four to six inches, and it is useless to try 

 to conform it to pot treatment. A long narrow box 



