150 
LEIANTHUS NIGRESCENS. 
In the following spring place the plants in their flowering-pots, in a mixture of 
equal parts of loam and heath-mould, with a little sharp sand to keep it open, and 
be careful to give a good drainage viith potsherds. 
If grown in a moist atmosphere with plenty of light and heat, they will by June 
be three feet or more high, and will begin to show signs of flowering. When in 
bloom they are very striking and singular objects, in consequence of the very dark 
blue of the flowers ; remove them at this time to the greenhouse, and by shading 
from the sun, the flowers will continue in perfection a long time. 
Cuttings of the young wood strike most readily if planted in pots of sand and 
placed under a handglass in a little heat. They are also increased by seeds, which 
ripen freely. 
The generic name was given by Grisebach from leios smooth, and anthos a flower. 
The corolla is regular, which distinguishes it from Lisianthus, with which genus it 
was formerly incorporated. 
