Nomenclatural consequences of the synonymization of Hypsela reniformis (Campanulaceae : Lobelioideae)

The recent synonymization of Hypsela reniformis with Pratia repens has nece ssitated several nomenclatural changes. The enlarged circumscription of Fl repens dictates the validation of a new combination to cover the species wh en it is considered a member of Lobelia. Because H. reniformis was the type of its genus, its three remaining congeners can no longer employ that gene ric name. They are transferred to Isotoma, from which they differ solely in the possession of indehiscent (vs. capsular) fruit.