It is of hybrid origin, but we cannot speak of its pa- 
rents with any certainty: one of them might be P. 
dumosum, and the other related to P. maculatum. It is a 
very free grower and an abundant bloomer ; and, from 
its numerous branches, it is always a bushy plant. 
Although the flowers are produced only singly or in 
pairs on the stem, yet their abundance makes up for 
that deficiency. It thrives well in a mixture of turfy 
loam, peat, and sand ; and cuttings strike root readily, 
if planted in pots in the same kind of soil, and placed 
in a sheltered situation. 
