from The Century Dictionary and Cyclopedia
- Cut into four parts, as a piston-ring.
Sorry, no etymologies found.
Its flowers, which are purple, come on the otherwise naked stems of last season's growth, lateral fashion, in threes mostly, and sometimes the blossomed stems will be over a foot in length; the flowers are ½in. long, sessile and funnel-shaped; the limb four-cut; sweet smelling and very durable.