Fissidens taylorii C. Mull., a species described from Australia is rep
orted new to the United States from northwestern Arkansas. Fissidens g
eheebii C. Milli., a name based on neotropical material is considered
to be a synonym. A description and illustrations off taylorii, based a
n the Arkansas specimen, are provided. A key to the Jive dimorphic Ame
rican species of Fissidens is included.