TONQUIN BEAN. 
loam and peat; and, like all the | 
Australian plants, care should be 
taken net to let them suffer from | 
any excess, either of drought or 
moisture. They are propagated 
either by division of the root, or by 
seed. 
Ticer FLrower.—See Ticrr'pia. 
Tieri'pia.—IJridee.—The Tiger 
Flower. ‘The commonest species 
of this splendid bulb was formerly | 
called Ferraria Tigridia, but it is 
now changed to Tigridia pavonia ; 
there is a variety called T. p. leone, 
and a second species called T. con- 
chiflora. They are all extremely 
handsome, producing abundance of 
their magnificent flowers in the open 
ground, which, however, are very 
short-lived, seldom remaining ex- | 
panded more than a few hours. The 
plants are natives of Mexico, and | 
the bulbs may be suffered to remain 
in the ground all the year, if they | 
can be kept dry ; there being more 
danger of their being destroyed by | 
wet than frost. The best mode of | 
treating them is perhaps that re- | 
commended for the Ixia. (See. 
I'xra.) # i 
TILE-RooT.—See GEISSORHI'ZA. 
Titua’npsia. — Bromelidcee. — 
Very curious stove-plants, most of | 
which are parasitical, and may be | 
treated like the stove Orchidacee. | 
(See Orcuipeous Erreyytes.) The | 
uthers may be potted in a mixture | 
of peat and loam, and propagated | 
by suckers. They have all showy 
flowers, which they produce abun- 
dantly. 
Toap-FLax.—See Lina‘ria. 
Togacco.—See NicoTia\na. 
Toxris——See HawkweEep. 
Tonquin Bean.—Dipterix odo- 
rdta, Schreb—(Baryosma Toéngo, 
Gert.)-—A leguminous plant, of no 
beauty in its flowers, which are 
purple, but cultivated for its bean- 
like seeds, which are remarkably 
fragrant. It is a native of Guiana, | 
waere it is a tall tree; “—— 
394 
ers, which require to be kep 
greenhouse, and grown in 
| well on rockwork. 
_Hothouse and greenhouse shrubs 
_als, natives of South America. T. 
TOURNEFORTIA. 
quires a stove in England, where it 
\may be grown in a compost of peat 
and loam. 4 
ToorHaCHE-TREE. —- Sec Xan- 
THO XYLON. =: 
Toriary.— The art of cutting 
yews and other trees into curious 
shapes, by putting a wire frame- 
work over them, and then clipping 
the trees into the desired form. This 
art was practised to such an extent 
in ancient Rome, that the word for 
topiarist was used as synonymous 
with that for gardener. 
Tore nia. — Scrophularinee. — 
Australian plants with pretty flow- 
loam. One species is a half-h 
annual, which may be raised on a 
hotbed, and planted out in May. 
Torre'ya.—Conifere.— A very 
'handsome evergreen tree, a native 
of Florida, in North America, near- 
ly allied to the yew, and forming a 
link between that tree and the hem- 
lock spruce. = 
Tormenti'LLa.—Rosdcee.—Brit-. © 
ish plants with yellow flowers, oe a: 
which, though weeds, look very 
The double. 
flowered variety of T. erecta is: 
ornamental. ; 
To’rtuLa.—Cryptogamia Mise 
—Wall-moss. A kind of mo 
very useful im making moss-hous 
from the brightness and variety of — 
its colours; some of the species 
being a dark-blue green, others of a 
rich yellowish green, others of a 
very pale pea-green, and one of a 
dark rich brown. They are all 
common in Britain. 
‘Toucu-ME-Not.—See Impa‘rrens. 
Tournero'rt1a. — Boraginee— 
- 
and hardy and half-hardy perenni 
Messerschmidia is a greenhe 
shrub, with very fragrant flowers, 
which have no beauty; and J. 
heliotropioides is a half-hardy pe- — 
