340 
Greenhouse and Stove Plants. 
TYDMA, 
GREENHOUSE SPECIES. 
T. angustatum. West Indies. 
T. humile. Isle of Luzon. 
T. pyxidiferum. 
T. radicans. West Indies. 
T. radicans Andrewsit. 
. radicans concinnum. 
' radicans dilatatum. 
reniforme. New Zealand. 
| trichoideum. West Indies. 
' venosum. New Zealand. 
pales SS} 
TROPAOLUM. 
These are handsome plants ; most of the 
greenhouse kinds are of twining habit and 
may be grown as climbers, planted out or 
in pots, or they can be kept in pots and 
trained to supports in the form of a bush, 
or otherwise, at the discretion of the culti- 
vator. 
They may be increased from seeds sown 
in an intermediate heat in shallow pans, 
in a mixture of sifted peat and sand ; the 
seed can be put in at any time of the year, 
but we prefer the latter end of summer as 
soon as they are ripe ; cover them slightly 
and keep the soil moderately moist. When 
the little plants are up stand them close to 
the glass, using a little shade so long as the 
sun is powerful, with air daily, and enough 
water to keep the roots in a healthy con- 
dition. Through the winter let them be 
in a temperature of about 45° or 50°; in 
the spring move singly into small pots, 
varying the size in proportion to the 
strength of the kinds grown; use soil 
similar to that in which the seed was sown, 
but with less sand init. Keep now, and 
through the summer, in a warm green- 
house temperature, with air and a little 
shade in sunny weather, supporting the 
shoots with sticks so far as needful, and 
keeping the soil moderately moist. Give 
larger pots to such as seem to require them 
further on in the summer. Admit more 
air in autumn, and keep through the fol- 
lowing winter at about 45°. They will 
need more pot-room in spring, and in other 
matters should be treated as in the season 
before. The plants should bloom this 
summer, after which keep drier at the 
roots, especially in the case of the herbaceous 
sorts, while at rest. All that is required 
in subsequent years is to give larger pots 
to those that are grown in this way ; the 
stronger-growing kinds can, if preferred, 
be planted out. 
The following are all handsome flowered 
sorts :— 
T. azureum. A Chilian species, with 
blue flowers, produced in autumn. 
T. brachyceras. Flowers yellow ; asum- 
| mer bloomer. From Chili. 
T. Jarratt. Red and yellow; blooms 
in summer. From Santiago. 
T. pentaphyllum. Flowers orange and 
yellow, produced in summer. <A native of 
Monte Video. 
T. polyphyllum. Orange and yellow ; 
a summer flowerer. Chili. 
T. speciosum. Has scarlet flowers, forth- 
coming in summer. From South America. 
T. tricolorum. A slender-growing, beauti- 
ful kind that bears a profusion of orange 
and purple flowers in spring or summer. 
It comes from Valparaiso. 
Insects.—Aphides and red spider will 
live on most of the kinds of Tropzeolum ; a 
free use of the syringe is the best mode of 
dealing with the spider ; for aphides fumi- 
gate. 
TUPIDANTHUS CALYPTRATUS. 
This species often appears under the 
name of Aralia calyptratus, with which it 
is synonymous. In the early stages of its 
growth the plant has a somewhat bushy 
form, but as it gets older it assumes a 
climbing habit. For decorative purposes 
it is most useful while in a young state. 
It can be increased by cuttings and 
grown on in the same way as advised for 
Aralia Sieboldii, which see. It does well 
ina greenhouse, and comes from the Khasya 
Mountains. 
TYDZA. 
A genus of herbaceous stove Gesnerads, 
in appearance and general character much 
like Achimenes. Among the kinds in 
cultivation several are species, but more 
are hybrids. Although they may be had 
in flower at almost any time of the year, 
they are most useful in the autumn and 
winter. 
Their cultivation in most respects is like 
that advised for Achimenes, which see, 
except that they must not be dried off as 
Achimenes require to be. 
T. Ailsa. Vermilion, yellow and crim- 
son. 
T. Amazon. 
and crimson. 
T. Bomb. Crimson and yellow. 
T. Cecilia. Red, yellow, and crimson. 
T. Chamaliéres. Red and yellow. 
T. Elaine.  Purple-rose, yellow, and 
crimson. 
T. gigantea. 
yellow. 
E. Hypata. 
Vermilion, red, yellow, 
Vermilion, and bright 
Rose, white, and crimson. 
