90 
THE FLORIST AND POMOLOGIST. 
vation. The seedling plant* from the self- 
fertilised berries above alluded to, having now 
blossomed, solve the mystery, males like 
fragrantissima and females like oblata being 
produced among them in about equal propor¬ 
tions. This conclusively proves that the two 
supposed distinct species are but the two sexes 
of one plant, which is sometimes hermaphro¬ 
dite, though it would seem commonly uni¬ 
sexual. 
Novel Hybrids. —Some interesting novel¬ 
ties among hybrid plants have recently been 
recorded. One is a very curious Mallow , 
produced at Nice by fertilising Hibiscus 
Moscheutos with the pollen of Malvaviscus 
arboreus. The hybrid has the habit and 
foliage of the mother plant, and its flowers 
are white at the base, as in that, but it is 
double, and the male parent has imparted to 
it some of its vermilion tints. It remains for a 
long time in flower, but its leaves are slowly 
and gradually shed at the approach of winter, 
those of the male plant being persistent during 
that season. It is very remarkable that double 
flowers should be directly produced as the re¬ 
sult of a cross between two single flowers be¬ 
longing to different genera. A Hybrid Palm 
has been obtained at Hyeres by M. Denis. 
This has been obtained by fertilising Cha- 
maerops humiiis var. arborescens with the 
pollen of the Date Palm, Phoenix dactylifera. 
The leaves are described as like those of the 
male parent, as also are the small orange- 
coloured ovate Date-like fruits; but the seed 
occupies nearly the whole of the interior of 
the fruit, is rounded or ovate in form, not 
grooved as in the Date, and the embryo, in¬ 
stead of being in the centre, is at one end of 
the hard albumen. 
Root-grafting. — This may often be re¬ 
sorted to in the propagation of various stove 
plants difficult to raise from cuttings; and the 
practice has been ad opted with success by M. Del- 
chevalerie, the head propagator at La Muette. 
A small portion of the younger growing part of 
the root, is taken as a stock, and on it is grafted 
a scion of the same species. In this manner 
such plants as Coffea arabica, Nauclea undu- 
lata, Strychnos colubrina, Aralia trifoliata, 
leptophylla, and crassifolia, and the Rose du 
Roi, among others, have been multiplied. Care 
must be taken that the graft is nut too long 
exposed to the air, and that the roots are 
perfectly healthy. The mode of grafting is 
immaterial. With due precautions plants may 
be obtained, it is said, by this method, within 
a very short time, at any season, while cuttings 
of the same species often take a year or more 
to root, even if they succeed at last. 
OBITUARY. 
Josef Ritter von Rawicz Warscewicz, 
whose death we regret to have to announce, 
died after a short illness on the 29 th of 
December last, at Cracow, where he held the 
post of Inspector of the Imperial Botanical 
Garden. He died in the fifty-fourth year of 
his age. To Orchid-growers he will long be 
held in grateful recollection for the many fine 
things introduced by him in the course of his 
travels, and distributed in this country mainly 
through the agency of the late Mr. Skinner. 
Several Orchids, including Cattleya Warsce- 
wiczii, figured in the present Number, the fine 
dark Canna Warscewiczii, and other plants, 
will perpetuate his name among plant-lovers. 
Mr. John Haythorn, formerly head gar¬ 
dener at Wollaton Park, near Nottingham, 
to three successive Lords Middleton, died at 
Nottingham, on the 10th ult., at the advanced 
age of 85. Mr. Haythorn had for some years 
past retired, and resided with his son, whose 
name is familiar to horticulturists a3 the 
manufacturer of Haythorn’s hexagon net for 
protecting the blossoms of fruit trees. 
CALENDAR OF OPERATIONS. 
STOVE AND ORCHID-HOUSE. 
The plants in these houses will now be dis¬ 
posed to grow freely; and as the days are 
about as long as they are in the tropics, this 
natural disposition may be encouraged by a 
temperature of 70° at night and 85° in the day, 
or 90° in the sun as regards those from dry 
and sunny parts ; but in the case of those from 
very hot and moist climates, and to which, 
consequently, a vaporous atmosphere is con¬ 
genial, the intensity of the direct rays of the 
sun must be mitigated by a thin shading. 
By a little attention, observation, and expe¬ 
rience, it will soon be understood when the 
shading may be safely dispensed with for the 
day; it may be removed when it is found 
that, unobstructed, the sun’s rays have so far 
declined as to be no longer able to raise the 
temperature above the limits before mentioned. 
When this is found to be the case, the air 
should be somewhat reduced, further reduc¬ 
ing it as the temperature seems disposed to 
fall. This, with due attention to watering, 
will induce substantial and vigorous growth, 
resulting in magnificent well-set flowers. 
Syringe occasionally. Shift the strong-grow¬ 
ing kinds as soon as they require it. Pot off 
seedlings. 
greenhouse. 
Endeavour to manage sun heat so as to 
render but little fire heat necessary. It is 
easy to make a strong fire ; but many have 
greenhouses that do not require a large fire, 
but at the same time require one to act 
quickly; and in order that this may be the 
case, the hot-water apparatus should be so 
