June 4, 1892. 
THE GARDENING WORLD 
633 
not exactly of the same age, for we noted that many 
of them were quite leafless, while others had a few 
leaves and the rest were in full foliage. All were, 
however, flowered pretty much alike, and the 
hundreds or thousands of flowers were very effective. 
It is a pity that the variety was not D. n. nobilius or 
some other of that quality. 
Odontoglossum Louryanum. 
The general contour of this Odontoglot is similar 
to that of O. triumphans, but the segments are some¬ 
what differently shaped, especially the lip, and the 
colours are different. The ovoid, compressed pseudo¬ 
bulbs bear from four to six lanceolate, deep green 
leaves. The scape bears a raceme of about five flowers 
or more. The oblong-elliptic sepals are pale brown 
with yellow tips, some yellow markings towards the 
ase, and a submarginal band of deeper brown. The 
ovate-oblong petals are slightly toothed at the edge, 
and brown with yellow tips, and marked with white 
and purple on the lower half. The lip is ovate with 
acordate base, finely fringed, pale brown and white 
at the base. The column is white and the wings 
tinted with pale brown. First-class Certificate 
Exhibited by Messrs. F. Sander & Co. 
Lselia purpurata Warnham Court Van. 
The sepals are rosy pink, and the petals rosy purple. 
The lip is very large, with a nearly flat lamina of 
a rich purple shaded with crimson and slightly paler 
towards the open. Award of Merit. Exhibited at the 
Temple Show on the 25th and 26th ult., by C. J. 
Lucas, Esq. (gardener, Mr. George Duncan), Warn¬ 
ham Court, Horsham. 
Reversion of Cypripedium caudatum. 
It is now generally recognised that Uropedium 
Lindeni is nothing more than a reversion of 
Cypripedium caudatum to an ancestral condition in 
which the lip becomes like the petals ; the three 
segments indeed constitute the inner whorl of three. 
A specimen was sent us the other day from Messrs. 
J. Veitch & Sons, Chelsea, showing a reversion to a 
primitive condition not only in the lip but also in 
the column. The lip was unequally developed on 
the two sides. The left side showed evidence of an 
attempt to simulate a petal, inasmuch as it was 
strongly undulated, and only prevented from twisting 
in a spiral manner by being adnate along one side to 
the rest of the segment which bore more resemblance 
to the lip. The whole organ was about 2 in. long, 
and the undulated side was like a petal in colour, 
and a cushion of hairs was developed at the base as 
in the petals. The other side represented the claw 
of the lip greatly elongated, the indexed side lobe 
being nearly at the apex. The stigmatic disc was 
separated into three of unequal size, and the column 
was divided in a similar way for half its length. One 
anther was unusually well developed while the other 
was somewhat imperfect. 
Cattleya Citrina. 
This lovely Cattleya has gained very much in 
popularity during the past few years, and it is now 
no unusual thing to see grand examples of cultural 
skill. The Rev. F. D. Horner, Lowfields, Burton-in- 
Lonsdale, has devoted a considerable amount of 
attention to the culture of this superb Cattleya, and 
he has been rewarded with the most extraordinary 
results. At the time of my visit there w'ere literally 
dozens of splendid blooms, whose aroma filled 
the entire house, quite out of all proportion to the 
number of plants grown. If Mr. Horner would 
detail his mode of culture, I am certain that it would 
be much appreciated by many readers of The 
Gardening World. Another plant grown and 
flowered very successfully at Lowfields, is Macillaria 
Sanderiana, several plants of which in small pots 
were carrying from ten to a dozen gorgeous blooms. 
—7. McWab. 
The Orchid Grower s Calendar. 
With such splendid weather as we are now ex¬ 
periencing, and with every prospect of its continu¬ 
ance, growers will find some difficulty in keeping the 
temperature in the various divisions low enough in 
the day time unless the houses are heavily shaded, a 
state of things I do not advocate except in rare in¬ 
stances. We endeavour to keep it low by frequent 
syringing amongst the pots and by pouring water 
over the floors. By this means we manage to keep 
the inside temperature of the cool houses lower than 
the outside without shading too heavily. If there is 
no stint of help a good plan in the hottest part of the 
day is to thoroughly wet the blinds; but there are 
not many of us who can spare the time for this. 
Aphis at this time is very troublesome, and 
should be diligently sought after or the young 
growths of Odontoglossums, etc , will suffer. We 
use a sponge where practicable, but for those found 
located in the heart a camel hair brush will be 
necessary or the young leaves are liable to get 
damaged. They are very fond of the young growths 
of Larlia anceps, on which they increase rapidly 
unless kept under. 
Disas are fast pushing up their spikes, and will be 
much benefited by being watered with liquid manure 
at intervals of a week. It need not necessarily be 
guano water, as I find these do not object to drain¬ 
ings from the cow shed if well diluted. If not pro¬ 
curable, soot water will give colour to the foliage and 
strength to the spikes. If not already done they 
may be placed in a cool pit or frame facing north. 
The bottom should be of coal ashes, as these retain 
the moisture longer than anything else. We water 
the plants twice a day, using a fine rose can, at the 
same time sprinkling the brickwork, ashes, and the 
mats or whatever shading is used. Unless a suitable 
brick pit is at hand I should prefer keeping them in 
the cool house nearest the door. Thrips. are very 
fond of these, and should be kept under by frequently 
dipping them in tobacco water; but as the spikes 
are now well advanced this cannot be done so well. 
A better plan, should there be any signs of them, is 
to drop a little in the heart of the growth by the aid 
of a sponge. 
Sophronitis.— These are now rooting freely, and 
should be repotted at once, using peat and sphagnum 
moss with a dash of sharp silver sand. Most of ours 
are grown in small pans or baskets, and suspended 
near the glass in the cool house, a position which 
suits them well during the summer months, but during 
winter a little warmer quarters suits them best. 
Amateurs who cannot give it the extra heat during 
winter will be glad to learn that we have grown it 
well when kept all the year round with the Odonto¬ 
glossums. 
Cypripediums.— We have no set time for potting 
these, but generally do so as they go out of flower. 
Generally speaking the barbatum section and hybrids 
from it do best when potted in almost all moss ; whilst 
villosum, insigne, and Boxallii, etc., do not object to 
a little loam. They are moisture-loving plants, con¬ 
sequently water must be given with no sparing hand. 
— C. 
Dandrobium Devoniense album. 
We have been favoured with some flowers of this 
beautiful variety from Mr. Jas. Brown, gardener 
to R. B. White, Esq., Arddarroch. The sepals and 
petals are creamy while ; and the deeply fringed lip 
is of that shade also with exception of a large orange 
blotch on each side of the throat, a purple blotch 
and some purple lines at the very base in the convo¬ 
lute portion of the same Mr. Brown states that he 
only received a small portion, but that the young 
stems every year exceed those of the previous year 
in length. Thus the stems now in flower are 2 ft. 
long, while those which produced them in the 
previous season were only 10 in. He grows it in a 
basket suspended from the roof of the stove, so that 
the stems hang down in a natural manner, and he 
considers that both this and the type do better when 
treated in this manner than when grown in pots. 
The variety is very pleasing, and certainly an 
acquisition. 
PLANTS FOR A TUB. 
The water Hyacinth, Pontederia crassipes, is an odd 
plant and a good one to grow in a tub. Its thick 
shiny leaves are on inflated bulb-like petioles, 
producing lovely spikes of light purple flowers. The 
rootlets, which are also purple, are very fine and 
feathery, and quite as charming as the flowers. The 
inflated petioles enable the plant to float, but more 
flowers are obtained by setting the plant in rich loam. 
When so treated its petioles elongate and lose their 
expanded form, as if the plant knew it had no further 
use for these boat-like structures. 
Novel and charming as these plants are, their 
sister, our native pickerel-weed, Pontederia cordata, 
seems still more beautiful. The large numbers of 
bright blue flowers, standing above its lovely green 
heart-shaped leaves, form one of the prettiest 
borders of our lakes and slow-running streams. 
It loses none of its beauty by standing in the water 
in company with the delicate white spider-lily, 
Pancratium rotatum, in the rivers of Florida.— 
American Gardening. 
Questions add AnsuieRS. 
*»’ Correspondents are requested, in order to avoid delay, 
to address all communications to "The Editor" 
or " The Publisher," and not to any person bv 
name, unless the correspondence is of a private 
character. Telegrams may be addressed " Bambusa, 
London.” 
Address Wanted.— Can any of our readers oblige 
us with the present address of Mr. G. R. King, 
formerly of Torquay. 
Ferns for an old Well.— C. M. : The stronger 
forms of the Hart s-tongue Fern, Scolopendium 
vulgare, would do well in the bottom of your old well 
5 ft. deep; and smaller forms may be planted with 
advantage round the sides. Nephrodium Felix-Mas 
and Lastrea spinulosa dilatata would also do well at 
the bottom or on the sides. The British Maiden¬ 
hair, Adiantum Capillus-veneris would also do well 
near the top. With a little care in planting an old 
well like yours may be made a very interesting 
feature in a garden. 
Geraniums and Pelargoniums. — Omega : The 
spotted French varieties grown in greenhouses and 
all the bedding varieties are true Pelargoniums, and 
should not therefore be called Geraniums. The 
spotted and show varieties generally come from 
Pelargonium cucullatum, and the bedding or zonal 
varieties from P. zonale and P. inquinans, all Cape 
species. Pelargoniums are distinguished from 
Geraniums in having irregular flowers, the latter 
being regular, and in having a nectariferous tube 
running down the pedicel from the calyx, which is 
absent in the Geranium. They were all called 
Geraniums originally by Linnaeus in error, hence the 
most frequent use of the name. By the term 
" irregular" is meant that the petals are of unequal 
size, two being smaller than the others, while 
“ regular " means that all the petals are of the same 
size. 
Glazing without top putty.— Omega : We do 
not know that any special term is applied to this 
modern method of glazing. 
Two Colours of Flowers on Laburnum.— A . D .: 
The Laburnum you sent us was L. Adami, which is 
now generally considered to be a graft hybrid, 
originally obtained by grafting Cytisus purpureus on 
Laburnum vulgare. At all events the two natures of 
those plants have been mingled and they often get 
separated. The shoot you sent us bore flowers of 
Laburnum vulgare and Laburnum Adami. We 
have sometimes seen the other parent (Citisus 
purpureus) appear on the tree, but this is by no means 
so common as the yellow flowers of L. vulgare You 
may then consider it as a case of the unmingling of 
the blood (so to speak) of two parents in the progeny. 
Nourishing Vines.— Omega : You can do this by 
keeping the pans or tanks over the hotwater pipes 
well filled with liquid manure from the stables, or 
you may make the liquid by steeping some cow dung 
in a tank amongst water. You could use a little 
guano in the evaporating pans occasionally. If you 
have no evaporating pans you may distribute the 
liquid manure over the border and pathways by 
means of a coarse rosed watering pot. The ammonia 
arising from the liquid manure and the guano would 
be absorbed by the damp soil of the border, and is 
therefore carried into the vines by means 01 the roots, 
not by the foliage as is generally supposed. 
Names of Plants.— A . D .: Passiflora quad- 
rangularis.— R. Thompson : The Dendrobium is 
D. Parishii (see p. 616) ; the other is Masdevallia 
Bonplava.— Jas. Thomson : Oncidium curtum. 
— J. Y. N.: 1, Lomaria gibba; 2, Fraxinus sp ; 
3, Cyathea dealbata ; 4, Davallia elegans : 5, Adian¬ 
tum Veitchianum ; 6, Adiantum hispidulum : 7, Lc- 
maria sp .—-Omega : Saxifraga crassifolia, the 
thick-leaved Megasea or Saxifrage.— E. M. J. : 
Populus alba canescens. —A. C. : A semi-double 
florists' Tulip which we cannot undertake to name. 
— J. Gold : Asperula odorata ; 2, Daphne Laureola ; 
3, Prunus Padus; 4, Ulmus campestris .—Omega ii. : 
Smith's Medlar (Mespilus grandiflora, also some¬ 
times named M. Smithii) — G. E. G. : 1, Laburnum 
ulpinum; 2, Cornus mas variegata ; 3, Berberis 
vulgaris; 4, Pyrus Aria cretica, sometimes called 
P. A. rotundifolia ; 5, Asplenium bulbiferum minus ; 
6, Too much shrivelled up to be identified and without 
fruit .—Perthshire : It is a very fine variety of D. 
nobile, but we are unable to identify it with any of 
the named sorts; the colour was too far gone, but 
the breadth of the petals and the roundness of the 
lip show that it is worth looking after. 
Odontoglossum Flower. — IV. Boyd : The flower 
you send is a very good form of O. crispum Ander- 
sonianum, but there is nothing distinctive about it to 
render another varietal name necessary O. crispum 
Andersonianum is usually more or less blotched with 
chestnut brown on a pale yellow or creamy white 
ground. Your variety takes its place amongst the 
latter, and the reddish brown blotches are well 
shown off on the white ground. 
Houndstongue, &c.— Flos : Houndstongue, Wood 
Garlic and Belladonna are pretty frequently grown in 
gardens as ornamental plants in the herbaceous 
border. The Dead Nettle is not grown there except 
it comes up as a weed. Houndstongue is a Borage- 
wort with purplish blue flowers, and grows generally 
