Orthotrichum truncato-dentatum

{{Short description|Species of moss}}

{{speciesbox

| name = Orthotrichum truncato-dentatum

| image =

| status = EN

| status_system = IUCN2.3

| status_ref = {{cite iucn |author=Bryophyte Specialist Group |date=2000 |title=Orthotrichum truncato-dentatum |volume=2000 |page=e.T39180A10167205 |doi=10.2305/IUCN.UK.2000.RLTS.T39180A10167205.en |access-date=14 November 2021}}

| genus = Orthotrichum

| species = truncato-dentatum

| authority = C. Muell.

| synonyms =

}}

Orthotrichum truncato-dentatum is a species of moss in the family Orthotrichaceae. It is native to Argentina and Uruguay. It was last collected over 100 years ago and its current status is unknown.