belonging to the hardy flower garden, because they 
never require the agency of artificial heat. 
As atmospheric temperature, uninfluenced by alti- 
tude, varies, gradually, in proportion as we approach 
to, or recede from, the equator ; so the vegetable pro- 
ducts of the earth possess peculiarity of organization 
adapted thereto. It must not, however, be supposed 
that vegetables will live only within those degrees 
of latitude in which they are indigenous, for we see 
that China and America, from latitudes twenty de- 
grees warmer than our own, have enriched our gar- 
dens with splendid subjects ; whilst some vegetables, 
natives only of warm or cold climates, bear open 
culture in almost every habitable part of the earth. 
In accordance with the susceptibility of cold which 
is shown by exotic plants, when brought under cul- 
ture, so are they distributed, thus; 
Stove plants are those which are chiefly natives of 
tropical countries. They require continual protec- 
tion with us; and through our winters, should have 
a temperatime not lower than sixty degrees. 
Greenhouse plants, the next class in degree of har- 
diness, require artificial heat in winter, which should 
rarely be lower than forty degrees. 
Frame plants include such as require the protec- 
tion of a frame, hand-glasses, or mats, during frost. 
Hardy plants comprise all perennials which bear 
full exposure in winter. These four classes, with 
their modifications, comprise the gardener’s range 
of temperatime. 
The Calceolaria plantaginea flourishes in a strong 
red loam, and cool situation; and yields a plentiful 
increase by offsets. 
Bot. Mag. 2805. 
