146 
THE FLORIST'S JOURNAL. 
T. tricoloruni , from Valparaiso in 1828; and T. polyphyllum, 
from Chili in 1827. These require to be treated as greenhouse 
deciduous climbers, to be grown in a mixture of peat, loam, 
and rotten manure, in proportions of equal quantity with sufficient 
sand to maintain the proper porosity through the entire mass. 
The repotting should be performed when the plants first exhibit 
their protruding stems through the soil. A peculiarity worth 
mentioning is observed by cultivators to exist in a difference 
between the young bulbs and those of mature age : the former, 
for the sake of increasing the substance of the tuber, should be 
potted with a slight elevation, or, at least, level with the surface 
of the soil, while the established roots, from which a display of 
flowers is expected, require to be covered with an inch or two 
of the earth; this induces a vigorous growth, though without 
the visible benefit to the tuber so remarkable under the opposite 
treatment. The ordinary attention to watering, training, and 
an airy situation in the house, with a slight protection from the 
direct rays of the sun, is all that will be required, until the 
plants begin to decline in beauty, when a gradual reduction of 
the supply of water should take place until the plant is left for 
the winter, surrounded by a ball of perfectly dry earth,—a far 
better method of preserving them than by an entire removal 
from the pots. An upper shelf in the greenhouse is the best 
position for them till signs of returning action are observed, 
when the application of fresh earth and other stimuli should be 
repeated. 
T. edule , introduced along with Azureum in 1842, from Chili; 
T. tuberosum , from Peru in 1836; T. Moritzianum , from Cu~ 
mana in 1839; T. Lobbicmum , from Columbia in 1840; and 
T. ( Chymocarpus ) pentaphyllum , form the second group. These 
require the protection of a greenhouse through winter, but from 
their larger size are unsuitable occupants (except for tall pillars 
or the roof) through the summer, but planted in a warm situ¬ 
ation in the garden, as we before remarked, form splendid 
objects. A difficulty has been partially experienced to induce 
T. tuberosum to produce flowers. We saw it once flowering 
magnificently; it was then placed at the foot of a south wall, 
and growing in a loam of the strongest and most tenacious 
description; and again we have known it to produce blossoms 
when under the most opposite treatment. In the one case the 
plant was evidently grown into flower and produced them in a 
