THE MOST USEFUL ORCHIDS 137 



brown and the sepals are barred with brown, while the lip is 

 lightly marked with red or brown. During the Summer 0. 

 grande will do quite well with 0. crispum^ but as Autumn draws 

 in this Orchid must be placed in warmer and drier conditions, 

 given all the light possible, and be kept rather dry all the Winter. 

 It will succeed in an intermediate house during the Winter months, 

 provided it is given very little water and allowed to become quite 

 dry before being watered ; or it may be placed for a similar period 

 at the coolest end of the house in which Cattleyas are grown. 



O. Hallii is a graceful Spring flowering species from the 

 Quito district, where it was discovered by Col. Hall in 1837, but 

 it was not until about 1864 that it came into cultivation. It is a 

 variable species and bears many flowers on " its long, arching 

 spikes. Each bloom is from three to four inches across and of a 

 pale yellow colour, sometimes even white, with bright red-brown 

 spots and blotches, the latter often occupying the greater part of the 

 area of the sepals. The lip may be pale yellow, or even white, with 

 red spots; the fringing along the edge of the lip is also a distinctive 

 character. Notwithstanding its grace and beauty O. Hallii is not 

 so largely grown as formerly, probably because it is not so often 

 imported as some other species, and the popularity of O. crispum 

 and the now plentiful artificial hybrids has also militated against it. 



O. Harryanum, one of the most distinct of Odontoglossums, 

 is named in honour of that celebrated horticulturist, Mr Harry J. 

 Veitch, of Chelsea. It flowered for the first time in cultivation in 

 August 1886. The species has but one failing, i.e. the petals 

 come forward and also turn inward a little, with reflexing tips, and 

 thus partly hide their exquisite basal markings and also the beauty 

 of the base of the lip. In spite of this, however, it is a very fine 

 species, and one that is deservedly popular. Not only does it stand 

 high for its own intrinsic merit, but it has proved of immense value 



