566 
THE GARDENING WORLD 
May 7, 1887. 
frames, heated sufficiently to exclude frost, answer 
their requirements admirably, and close proximity to 
the glass will also tell in their favour.— B. B. 
-- 
DEUTZIA CANDIDISSIMA 
PLENA. 
Foe forcing into flower during April, or any time 
about Easter, this fine variety stands well to the front. 
The double flowers are of the most delicate pearly white, 
and are produced from every eye on the last year’s 
wood. It is not often grown as a forcing plant, being 
oftener seen in the mixed shrubbery. To bring it to 
perfection for forcing purposes, it should be kept in 
pots all through the season. If medium-sized plants 
are potted up now (or if potted up earlier would have 
been better), all the weak wood should be cut clean 
away and the stronger shoots shortened back, leaving 
about half-a-dozen eyes on each ; allow them to 
stand for a short time in a cool house till the root- 
action commences (which will generally be in about 
a fortnight). They should then be placed in a good 
light house having an intermediate temperature, where 
they can be well syringed, which will soon cause them 
to break vigorously. The growth thus made, coming 
from the strong shoots, will necessarily be strong; 
these shoots will soon grow to the length of 1 yd. or 
so, when they will have finished their growth. 
It is as well to place them in a cooler structure for a 
fortnight before finally taking them outside, when 
they should be plunged in a bed of ashes, and fully 
exposed to-all the sunshine they can get. In this bed 
they can remain until wanted for introduction into 
heat again for the purpose of hastening their flowering 
period. This variety will not force so early as D. 
gracilis, and to attempt it will only result in causing 
the eyes to go blind instead of expanding. The plants 
should be treated liberally at all times, as far as water 
and stimulants are concerned, and never be allowed to 
get dry. 
After they have become established in pots, it will 
be advisable to keep them in pots permanently ; and 
every season after the plant has bloomed it must be 
cut back, and as soon as it shows signs of fresh growth 
should be turned out of the pot, the ball of soil reduced, 
potted again into the same size, and grown on as pre¬ 
viously advised. Strong compost is best for this 
Deutzia. Good loam and rotten manure, well incor¬ 
porated together, with some sharp river-saud, suits it 
as well as anything that can be used. 
I have found it to be one of the most useful plants 
we possess, and the flowers are always in demand for 
wreaths or bouquets, being especially esteemed by 
ladies for wearing. — IV. G. 
-->X<~- 
CLIVEA v. HIMANTOPHYLLUM. 
Notwithstanding the cryamongstmodern gardeners 
and others for simple botanical and English names, 
they still stick to the old ones (no matter how difficult 
or inconsistent they may be) with a dogged pertinaeity 
that is truly remarkable. Not less striking are the 
endless inquiries as to whether the name should be 
spelled Imatophyllum, Imantophjdlum or Himanto- 
phyllum. Of these three, if priority has the greatest 
claims upon our consideration, then Imantophyllum, 
the name given to it in rhe Botanical Magazine, t. 2856, 
ought to stand. There are those, moreover, who argue 
that because a name has once been giveD, it should not 
on any account be altered, whatever blunders may have 
been originally committed with regard to its ortho¬ 
graphy or derivation. 
Imatophyllum is now considered by the leading 
authorities to be erroneous, and Imantophyllum is 
advanced instead, because the word has been derived 
from imas, imanlos, a thong, and phyllon, a leaf, 
referring to the leathery thick strap-shaped leaves, 
characteristic of all the species. Still another version 
of this is that the Greek derivation of the first part of 
the word was aspirated, and we should accordingly 
pronounce it Himantophyllum, as Sprengel wrote it. 
All this argument is on the assumption that Clivea 
and Himantophyllum are to be retained as distinct 
genera—a position which is untenable according to 
experiments, recent information, and a close study of 
the structure of the different species in question. There 
is still an inconsistency to be surmounted, inasmuch as 
gardeners do not adhere to their own tenets. If 
pendulous tubular flowers are held to be the distinction 
between Clivea and Himantophyllum, then why is C. 
Gardeni called Id. Gardeni in some gardens and books ? 
If we are to reduce all the species to Clivea, as should 
be done, there still remain three different ways of 
spelling the generic name. C. nobilis, the generic 
type, was introduced in 1823, and was first named by 
Lindley after a Duchess of Northumberland of the 
family name of Clive. The specimens from which the 
generic description was drawn up flowered at Syon 
House before those at Kew, which Sir William Hooker 
named Imatophyllum Aitoni. Clivea, then, is virtually 
the oldest name ; but we find two more modern 
spellings of it—namely, Clivia and Cliveia. Neither 
of the names are to be considered anything else than a 
Latinised form of English ; and the shorter spelling, 
and that nearest the name Clive, would be Clivea, as 
formerly written. It is, moreover, as easily pronounced 
and as euphonic as Clivia, which is reckoned by some 
of our leading authorities as the correct spelling. —A 
Gardener. 
-- 
STEPHANOTIS FLORIBUNDA. 
I am pleased to know that someone has been suc¬ 
cessful in flowering this beautiful climber in a cool 
greenhouse. Mr. B. D. Knox (p. 507) asserts that he 
can flower it easily from the month of May to the 
middle of December, in a greenhouse that can with 
difficulty be kept above freezing-point during the 
winter months. Perhaps Mr. Knox would kindly 
forward to the editor a box of flowers taken from his 
plant in a cool greenhouse the first week in December. 
If he will do so, I shall be happy to pay him the 
market value of the flowers, as a souvenir of skill 
greater than I can boast of possessing. 
Your correspondent “D. H. ” (p. 538) is a little 
more reasonable in his remarks when he says his plant 
was good in July and August, a few flowers being left 
in October, and-that his house did not get below 45°— 
sometimes 40°. This bears out the concluding part of 
my remarks on p. 473, at the end of the second 
paragraph, which says that I can perfectly understand 
the plant being grown in an intermediate heat, so as 
to flower in the autumn ; but to say that it will flower 
freely in any greenhouse is altogether misleading. 
We have Stephanotis flowering profusely now, having 
done so all through April, and we are likely to have 
flowers for some time to come ; but we use stove heat 
to get them so early. Our plants are never allowed to 
be in a lower temperature during winter than 45° ; and 
at the present time we run the heat as high as 80°, with 
air on during strong sunshine. I am rather inclined 
to keep to the old system of growing the Stephanotis 
in heat, for I do not see that the cool sj’stem would be 
a profitable means of making the plant pay for the 
labour expended.— IF. G. 
-- 
BOILERS. 
In my note on the “Gunnersbury ” and other boilers 
(p. 517), I simply stated facts that have come under 
my own personal observation, and have been impressed 
upon me in the course of my practice. Mr. J. B. 
Sidney’s criticisms on my boiler (p. 553) are simply 
theoretical, and are largely made up of surmises, and 
only need a little light thrown on them to show their 
unstableness. I am afraid Mr. Sidney did not read my 
note very carefully, or he would not ask why I claim 
greater durability for the “ Gunnersbury ” boiler “than 
is possessed by the Flue and Terminal-end Saddle, &c.” 
In my case (as I stated before) I get rid of the 
sediment from the most vulnerable part, the foot, of all 
the forms of saddle boilers. I can assure Mr. Sidney 
that when I had the Gold Medal and other forms of the 
Saddle in use, that the precautions he mentions of 
running off the water at intervals was adopted, and I can 
further assure him that something stronger than an Lin. 
iron rod was required to break up the incrustations at 
the foot of the boiler, and there was still greater diffi¬ 
culty in getting rid of the sediment through an ordinary 
plug 1 i in. in diameter. The only effectual plan to 
deal with the incrustations on a Saddle boiler is to have 
a plate about 8 ins, in diameter fixed about midway on 
each side of the boiler. The boiler can then be 
examined and cleaned out every six months by any 
ordinary country blacksmith. The trouble of uncovering 
the crown of the boiler is not much ; and those who 
have Saddles in use, and wish them to last, cannot do 
better than adopt the above plan. 
In my previous situation all our boilers were plated 
as described above ; otherwise their existence in sound 
condition would have been very short, owing to our 
supply of water coming from the limestone. 
The comparison Mr. Sydney makes between the 
“Gunnersbury” and “Trentham” cannot be worth 
much, as he has not tried the “ Gunnersbury.” Y'hen 
I got tired of the incessant trouble attending Saddle 
boilers, I turned to the Trentham Cornish and had two 
fixed to replace two Gold Medals, so that I am in a 
position to speak of the relative merits of this boiler 
compared with my own. My Trenthams are set in the 
manner described by Mr. Sydney, with upper and 
under flues, and I am able to say that they are not 
nearly so quick in action as the “Gunnersbury.” It is 
useless putting in Trenthams without at the same time 
putting up a chimney more adapted to a factory than 
a garden, as the Trentham will not act satisfactorily 
without a long shaft to give necessary draught. As to 
cost, in my case the “ Gunnersbury” was the cheapest 
of the two. 
The subject of cast-iron versus welded boilers is not 
new, as in my earliest stoking days cast-iron boilers 
we re very common. There is always an uncertainty 
about them unless they are ill constant use, as the 
sudden expansion and contraction when they are in 
intermittent use often leads to their destruction. I had 
a case here during the past winter which forcibly 
illustrated to me the uncertainty of cast-iron. During 
a spell of frosty weather, a thoughtless man turned the 
heat fully on to a set of pipes that were standing at 
the freezing point, and in less than ten minutes the 
flow pipe snapped asunder like a piece of glass. 
I am glad to be able to agree with Mr. Sydney's 
advice, that it is better to put in two medium-sized 
boilers than to trust to one large one.— J. Roberts, 
Gunnersbury. 
-- 
GRAPES: GROS COLMAR v. 
LADY DOWNES. 
I have carefully read Mr. Hiding's last communi¬ 
cation, and have only to say that he, of anyone, has 
the least cause for complaint. If Mr. Biding fails to 
see the question so distinctly raised by me on p. 379, 
and raises side issues having no direct bearing on the 
main question, as well as attempting to turn the 
subject into a question of general opinion as to the 
qualities of flavour of Gros Colmar and Lady Downes, 
he must excuse me for clearing away the irrelevant 
matter—as soon as I find such to he the case—and 
returning to the original question. That raised on p. 
379 is not one of “treatment,” but of “kind of heat,” 
as the context plainly shows. My object in asking 
your correspondent the questions he complains of was 
to enable him, if he could, to more clearly show the 
relevancy of his first remarks to the original question 
raised by me. Mr. Riding appears to forget the fact 
that this discussion did not originate with the four 
questions I asked him. Neither did I raise that of the 
general quality of Gros Colmars as usually grown, but 
drew attention to their superior quality under certain 
peculiar conditions. I distinctly stated that “until 
last December I never tasted a Gros Colmar that I 
considered equal in flavour to an equally well-grown 
Lady Downes.” That statement distinctly shows that 
I had previously shared the general opinion in regard 
to the flavour of this well-abused Grape. 
But that statement I now wish to qualify by the 
words “ with one exception,” for until a few days since 
I had quite forgotten a circumstance that occurred 
several years ago. I was visiting a friend in winter, 
-who has charge of some well-known gardens, and he 
brought into the room where I was sitting, a few 
Grapes, with a request that I should express an opinion 
as to their flavour, and also try to guess the name of 
them. The berries were larger than average Ham- 
burghs, but not quite so large as average Gros Colmars, 
and quite black in colour ; the flavour was quite dis¬ 
tinct from any black Grape in general cultivation- 
supposing that the disagreeable flavour peculiar to 
average samples of Gros Colmar to be the proper and 
constant flavour of that variety—but more nearly 
resembled that of Mest's St. Peter’s; and the skin 
was as thin and more dissolving than the skin of 
Hamburgks. I confessed my inability to name the 
Grape ; felt confident it was not Gros Colmar, because 
of the superior flavour of the sample, and of the entire 
absence of the nasty flavour so frequently found ; but 
