RHO 
RHU 
quite _ level; distribute the seed evenly 
over it, and cover as thinly as possible; 
place the pans in a gentle hot-bed, and 
in a few weeks the plants may be expected 
to make their appearance. When about 
an inch high they may be transferred to 
other pans, and by keeping them in a 
close frame, shaded, and moderately 
moist through the summer, they will 
make nice little plants by the autumn; the 
same frame may hold them in winter, and 
in the next spring they will bear removal 
to the open ground. The planting out 
should be done in April, and it will be 
necessary to carefully water and shade 
them through the succeeding hot weather, 
to encourage a vigorous development of 
shoots. The strongest will flower in the 
third season, and immediately after 
should have the terminal bud removed, 
iu order to induce the production of 
branches and make bushy plants; their 
subsequent removals must be regulatec 
by their growth, and the more often 
young plants are shifted, the greater 
number of roots will be made. Layers 
may be formed any time between mid¬ 
summer and winter, of the current 
season’s growth, cutting a tongue to 
each, and laying them into very sandy 
peat; they are fit for removal in twelve 
months. Cuttings are troublesome, be¬ 
cause so long in hand; the half-ripened 
wood makes the best, and should be 
struck in sand, covered with a bell-glass 
on a gentle heat. The finer sorts are 
very generally increased by working upon 
the more common, and is the quickest 
means of raising a stock, besides the 
advantage reasonably to be expected in 
imparting additional strength to the scion 
by placing it upon a robust stem; the 
common method of whip-grafting suc¬ 
ceeds 'with them, or if the increase is 
desired to be very great, shield-grafting 
is employed : by either method the plants 
require some nursing till the union is 
effected, and therefore the stocks should 
be previously grown in pots. 
. Our space will not allow the enumera¬ 
tions of the many fine varieties in cultiva¬ 
tion, but the following selection contains 
some of the handsomest of the standard 
species and their offspring: Alta-clerense, 
crimson: arboreum, scarlet; a. nkeum, 
white; a. Paxtonii, crimson; a. roseum , 
rose; a. undulatum , rich pink; a. venus- 
tum, pink spotted : campanulatum , pale 
rose : Camtscliaticum , purple : cat aw- 
biense,- purple; c. Russellianum, bright 
rose, spotted; c. tigrinum , deep rose, 
richly spotted: Caucasicum, purple; 
C. Nobleanum , deep red; C.pulcherrimum, 
pale rose ; C. Standishii , rich red; C. stra- 
mineum, primrose: ch/rysantlmm , yellow : 
dauricum , purple: fermginev.ru, scarlet : 
hybrid uni, pink; h.formosum, large rose : 
hirsutum, scarlet, very dwarf: maximum , 
pink; m. album , white; m. hybridum , 
white and purple: ponticum, purple; 
p. Lowii, white; p. magnified , shaded 
rose; p. obtusum, purple; p. odoratum , 
rose; p.pulchrum, deep rose : punctatum , 
rose, curiously mottled : rhodora, pale 
purple; the last named was formerly 
regarded as generically distinct, and was 
known as Rhodora canadensis, closer in¬ 
vestigation, however, has attached it to 
Rhododendron. When these plants are 
introduced to plantations bordering pas¬ 
ture-land, they should be carefully fenced 
in, as the effects of their leaves upon cattle, 
that may happen to browse upon them, is 
found to be veryinjurious; besides which, 
the plants are thus seriously damaged. 
RHUS, Sumach (Linn.) Rat. Grd. 
Anacardiaceue. This genus contains se¬ 
veral hardy trees and shrubs, having 
inconspicuous green flowers, in some 
species followed by berries of strong me¬ 
dicinal properties, and most of them pos¬ 
sess handsome foliage; and, being for 
the most part rapid growers, are occa¬ 
sionally introduced in large shrubberies 
or the arboretum. The most common 
species is R. typhina, the Virginian, or 
Stag’s-horn Sumach. This is frequent in 
suburban gardens, where its large pin¬ 
nate leaves, on the robust,, woolly, blunt 
Drenches, are very striking; and, as it is 
::ound to bear the smoke and confined 
air of those districts, may be safely re¬ 
commended for such places. It is also 
the largest of the genus, often attaining 
twenty or thirty feet in height. It is 
readily increased by suckers or layers, 
and grows in any soil or situation. "The 
flowers are hermaphrodite in some species, 
