Map.} HOT-HOUSE — OF REPOTTING, ETC. 151 
it is a plant unique in appearance, having large elongated 
ovate leaves, beautifully striped with green and dark 
purple, and called the Zebra plant. It has light blue flowers 
in ovate spikes, about the size of large pine cones. It is 
an herbaceous plant ; but in the warmest part of the hot- 
house retains its splendid foliage ; requires a very liberal 
supply of water, and ought to be in every collection. (Soil 
No. 11.) 
Cdnnas, about thirty species, several of them deserving 
cultivation both for flower and foliage ; they are principally 
natives of the West Indies, and might all be easily obtained. 
The finest are C. giydntea, has large leaves and orange flow- 
ers ; C. limbdta, flowers scarlet and yellow ; C. discolor, has 
large cordate, acuminate leaves of a crimson colour, the flowers 
are scarlet; C. tridijfbra, has large crimson nodding flowers, 
very different from any of the others, and the finest of the 
genus. They all, while in a growing state, require a liberal 
supply of water ; and being herbaceous plants, watering ought 
to be given up about the first of November, and renewed in 
February, thus giving them a cessation which they require to 
flower freely; but when water is constantly given, which is 
the general plan in our collections, they continue to push 
weak shoots and few flowers. (Soil No. 12.) 
Cactus. — This extensive genus is interesting, and varied 
in character and habit ; it is now divided into seven distinct 
genera, according to their natural appearance and disposition. 
We will describe a few of each genus, none of which going 
under the name of Cactus, we will give them the six follow- 
ing, premising that the time is not far distant when this 
family will be successfully cultivated in every parlour-window, 
and the whole tribe will be sought for with more avidity than 
any other class of plants that have ever been brought to 
notice, not even excepting the Rose. They require a dry 
heat, and will grow either in town or country, and are com- 
pletely adapted for the denizen amateur, and will afford more 
beauty and interesting display than can be imagined until 
witnessed. 
Mamill arias, about seventy species, and are those which 
are covered with roundish bearded tubercles, and with small 
red and white flowers. M. coccinea, M. simplex, M. pusiUa, 
31. cdnica, 31. stellata, and M. acanthbphlegma, are good 
