THUNBERGIA. 
393 
THYSANOTUS. 
gum Sandarach, and being the cele- | but these insects seldom appear upon 
brated Spanish wood Alerce which 
‘is so hard that it is said to resist 
fire, and of which the cathedral of 
Cordova was built. It is also sup- 
posed to have been the sandal-wood 
of the ancients. [The foregoing 
remarks, respecting the habits of the 
American Arbor Vite, do not apply 
to this tree as seen in many parts of 
the northern States, where it grows in 
great abundance on dry lime-stone 
hills, and forms in its natural state 
the most symmetrical dense cones | 
of verdure from the ground, to thirty 
or forty feet in height. Planted as 
a hedge, we have found it to answer 
admirably ; as it forms by its natural 
growth, without the least trimming, 
an impervious screen at all seasons. 
The white cedar of our swamps, 
generally known by this name, is 
the Cupréssus thyoides.—Eb.| 
Tuunse’raia. — Acanthacee. — 
The beautiful climbing plants gene- 
rally known by this name differ very 
much in the colour of their flowers, 
though very little in their shape. 
Some botanists divide them into 
three genera. JT. Hawtaynedna, 
with dark-purplish flowers, they call 
Meyenia ; and of T. coccinea, with 
three other nearly-allied species, 
they have formed the genus Hexa- 
centris ; while they leave T. grandi- 
fléra, with dark blue flowers, 7’. 
fragréns, the flowers of which are 
white and sweet-seented, 7. awran- 
tidea, with orange flowers, and 7". 
alata, with buff flowers, with its 
white-flowered variety, in the genus 
Thunbergia. J. alata and T. au- 
rantiadca, which is probably only a 
darker-coloured variety, are the most 
common of these kinds, and they 
may be grown either as stove or 
greenhouse climbers, or as half-hardy 
annuals. 7’. aldta is a native of 
it when it is grown in the open air. 
When treated as an annual, the 
seeds should be sown in January on 
a slight hotbed, or ina sheltered 
situation in the open ground. The 
best soil for them is equal parts of 
peat and silver sand, to which a 
little veretable mould may be added. 
The soil should be kept moist, but 
it should be well drained, as the 
plants will perish if either kept too 
dry or suffered to have their roots in 
stagnant water. When planted in 
the open air, where they are finally 
to remain, the long shoots should be 
pegged down at the joints all over 
the bed; and thus treated they will 
send up innumerable flower-stalks, 
so as to make the whole bed appear 
a mass of flowers. TJ. aurantidca 
may be treated in the same manner ; 
but 7. a. albiflora is rather more 
tender, and appears generally to 
succeed better ina greenhouse than 
in the open air. When these plants 
are grown in a stove, and beset with 
the red spider, the only way to de- 
stroy it is to syringe them» with water 
heated to 120°. Th ler species 
of Thunbergia are ate kept in 
the stove, and I believe have never 
been treated as annuals, though 
most of them seed freely. They 
are grown in loam and peat, and 
are propagated by cuttings. 
Tuyme.—See 'Try‘mus. 
Tuy'mus._Labidte—-The Thyme. 
Fragrant dwarf shru ery suita- 
ble for rockwork. TJ. grandiflora 
is, perhaps, the most ornamental. 
They should be grown in light rich 
soil, and are increased by dividing 
the root. ; 
Tuysano‘tus. — Asphodélee. — 
Australian plants, with very singu- 
larly frmged flowers. The flowers 
expand about eight o’clock in the 
the East Indies, and when treated 
as either a greenhouse or a stove 
plant, it is very apt to be covered 
with the red spider (segupcanve) ; 
morning, and they close at two, 
never remaining unclosed longer 
than six hours. They are grown 
in “& greenhouse or stove, in sandy 
“a 
