quite regularly corymbose, instead of being of different 
heights as in hyssopifolia; its leaves too are more uniformly 
three-ribbed. 
In G. acris the leaves are pretty uniformly one-ribbed, 
and the inflorescence much smaller and more contracted. 
All the species of this genus are well adapted for borders 
of shrubberies, and for places where shade-loving plants 
alone will grow. 
