In article , Iris Cohen
writes
My understanding is that Pratia angulata and Laurentia or Isotoma fluviatilis
are synonymous. They look identical to me, but I am strictly an amateur. One of
the nurseries is questioning this. Is there any reference on the subject?
Iris
Iris,
Central NY, Zone 5a, Sunset Zone 40
"A tree never hits an automobile except in self defense." - Woody Allen

Googling tells me that Pratia *pedunculata* is the same as
Laurentia/Isotoma/Lobelia fluviatilis. Pratia angulata is White Star
Creeper.
--
Stewart Robert Hinsley