200 
THE FLORIST AND POMOLOGIST. 
give them a little careful examination. Among those which may be recom¬ 
mended to the cultivators of curious plants are D. ceratosanthes , D. Houstoni , 
D. pilosa, D. tubicina, D. arifolia, and D. maculata. 
M. 
COOL ORCHIDS—ODONTOGLOSSUMS. 
Resuming my remarks onOdontoglots,I may in the first place observe that 
in my previous remarks on cool treatment (see p. 176), the expression—the 
very essence of the pseudo-bulbs was “ washed out of them,” should read 
roasted out of them. I now pass on to remark on other species. 
0. Hallii is like an intermediate between 0. luteo-purpureum and 0. glorio- 
sum. It is not so good as either, in any specimens I have yet seen or flowered, 
and it might be very well ranked akin to luteo-purpureum. A bad variety 
of the latter, and a good variety of the former need not fall out with one 
another on the score of beauty. The habit of 0. Hallii is fully as vigorous, 
but it never yields quite so many flowers in the raceme. The differences 
in the formation of the pseudobulbs and leaves are something almost 
astonishing, and one can scarcely believe, before the flowers open, that a 
similarity of inflorescence could exist. This little bit of structural dimor¬ 
phism is common to all the species that I have seen imported from Central 
America, and in no genera or species could be said to exist to the same 
degree, unless in Lycaste Skinneri. 
O. Dawsonianum is simply a variety of rubescens, which is again a 
variety of Rossii. I can speak with a certain degree of confidence about 
