* *% 
Fe 
“ 
“ 
ror & 
vw 
» 
_e grown in any garden soil. 
TRAGOPYRUM. 
rennial, strongly resembling the 
Heliotrope in its flowers, but with- 
out any fragrance. They are all 
free-growing plants in sandy loam, 
and they are propagated by cut- 
tings. 
TRACHE Lium. — Campanuldcee. 
—Throatwort. The most common 
species, 7. cerileum, is a half- 
hardy biennial, which requires to be 
raised on a hotbed, kept in a frame 
during winter, and planted out in 
spring, where it is to flower in rich 
mould. 
Tracuy mMEe‘Ng. — Umbellifere. — 
Australian shrubs, requiring a green- 
house. For the beautiful annual 
species, 7. ceritlea, see Dipiscus. 
 ‘Trapesca'nt1a.—Commelinee.— 
Spiderwort. Handsome herbaceous 
plants, the common kinds of which 
only require planting in the open 
ground, and inany common garden 
soil. There are, however, several 
hothouse plants belonging to the 
genus, and two or three Mexican 
or South American annuals, which 
all require a light soil, enriched with 
_ rotten dung, or vegetable mould. 
Tracoro'con. — Composite. — 
_ Goat’s Beard. Ornamental biennial 
plants, natives of Europe, which 
only require to receive the common 
treatment of similar plants, and to 
Of 
the British species, the most re- 
“markable are 7’. praténsis, the pop- 
ular name of which is Go-to-bed-at- 
noon, from the flowers closing in 
the middle of the day, and which 
has large yellow flowers, and a very 
curious feathery head of seeds; and 
T. porrifolius, the common Salsafy, 
which has purple flowers, and the 
roots of which are occasionally 
dressed as a vegetable. 
_ Tracory‘rum. — Polygénee. — 
_ Goat’s Wheat. Ornamental shrubby 
_ plants, with pink flowers, natives 
of Europe and America, which 
~ suould be grown in yery sandy 
loam, or heath-meuld. 
* 
395 
TREE CARNATION. 
TRAINING is an important opera- 
tion, whether it be applied to nail- 
ing trees against a wall, or to train- 
ing herbaceous plants over an iron 
or wooden frame-work. Climbing 
Roses may be trained as pyramids 
by fixing a pole with three legs, or 
three poles, in the ground and sus- 
pending hoops from them, as shown 
in fig. 58, and this mode of training 
Fig. 58.—Modes of ——— Roses, &c., to 
form Pyrami 
may be applied to various other 
plants. Plants in pots may be 
trained by fixing a number of sticks 
or pins of iron, with hooks attached 
(a) in the earth, in the pot, and 
resting hoops on them, as shown in 
jig. 59. 
Tra'pa. —Hydrocharidee—Wa- 
ter Caltrops. Aquatic plants, na- 
tives of Europe and the East In- 
dies, with white flowers, and very 
curious nuts, which, when cooked, 
rescmble in taste those of the chest- 
nut, and are equally wholesome. 
The rhizoma should be planted, or 
the seeds sown, in loamy soil, at the 
bottom of the water in which the 
plant is to grow. 
TRAVELLER’s Joy.—Clématis Vi- 
talba. 
Tree Carnation.—Didnthus ar- 
béreus is in its wild state probably 
ake 
es 
