j;imi;irv, 1913. 
THK ORCHID WORIJ). 
93 
ODONTOGLOSSUM HARWOODII. 
(See Coloured Plate.) 
nobile Harryanum crispum triumphar s 
I 1 I I 
Rolfepe harvengtense 
j I 
I. 
maculatum auriferum VViganiaiium 
I I 
Harwoodii. 
I T would be difficult to find an Odonlo- 
y;lossuin more distinct in colour and 
labellum markings than Harwoodii. Only 
three seedlings of this remarkable cross were 
raised by Mr. Charlesworth. The first to 
flower was illustrated in the ORCHID WORLD, 
July, 1912; a coloured plate of the "Shrub- 
bery variety " is included in the present issue ; 
and the third seedling is, as yet, a small plant, 
not likely to flower for several years. The 
bright golden-yellow colour is derived from 
the triumphans and maculatum parents, but 
the latter, on account of its auriferous nature, 
seems to have had the strongest influence. 
The handsome blotches on the labellum of 
this hybrid are another interesting feature, 
for besides the elegant appearance which they 
impart to the flower their origin is, at present, 
quite unaccountable. Od. Uro-Skinneri has 
produced somewhat similar markings in 
hybrids obtained by its use, and it may not be 
improbable that all spotted Central American 
Odontoglossums will have a similar influence 
over their near Colombian relatives. 
Both of the flowered plants of Harwoodii 
are now in the well-known collection ot 
F. Menteith Ogilvie, Esq., The Shrubbery, 
Oxford, where they have as companions 
many other choice and beautiful hylirids. 
CONFERENCE REMARKS. 
Sobralias will grow well in the warm part 
of an Odontoglossum house, and in this 
situation have flow-ered splendidly every year. 
Flowers of Vanda gigantea and the fleshy 
Phaljenopses of the Luddemanniana section 
do not fade when fertilised, but only lose 
their colour. 
Old back bulbs have a detrimental effect 
on the plant, and should be removed, allowing, 
of course, three or four healthy bulbs to 
support the new growth. 
Manurial aid is not necessary for Orchids, 
although a few terrestrial kinds, such as 
Cymbidiums, might receive some benefit from 
occasional weak doses. 
Orchid houses should be well built in open, 
light and airy positions. Failures were often 
due to lack of these essential points, and not 
always for want of care on the part of the 
grower. 
The finest results m cultivating Orchids 
were obtained when the natural conditions 
were reproduced as near as circumstances 
would allow. 
ROYAL HORTICULTURAL SOCIETY. 
December 3rd, igi2. 
Members of the Orchid Committee present : 
J. Gurney Fowler, Esq. (in the chair), Mr. 
James O'Brien (hon. sec), Sir Jeremiah 
Colman, Bart., Sir Harry J. Vcitch, Messrs. 
Gurney Wilson, J. Wilson Potter, R. G. 
Thwaites, F. Sander, R. A. Rolfe, T. Arm- 
strong, A. McBean, C. H. Curtis, W. Cobb, 
J. Charlesworth, J. Cypher, W. H. Hatcher, 
J. E. Shill, H. G." Alexander, A. Dye, W. P. 
Bound, W. Bolton, de B. Crawshay, and J. S. 
Moss. 
Lieut.-Col. Sir George Holford, K.C.V.O., 
Westonbirt (gr. Mr. H. G. Alexander), 
exhibited the unique Vanda coerulea San- 
deras with two spikes of clear magenta-pink 
flowers, having very little trace of the usual 
blue. It received a First-class Certificate, 
November 22nd, igio. 
Messrs. Jas. Veitch and Sons, Chelsea, 
received a Silver Flora Medal for an inter- 
esting exhibit of Zygopetalum Mackayi, which 
had been raised from seed obtained by 
crossing this species with Odontoglossum 
