Arachnothryx fosbergii

{{Short description|Species of plant}}

{{Speciesbox

|status = EN

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Jaramillo, T. |author2=Cornejo, X. |author3=Pitman, N. |date=2004 |title=Arachnothryx fosbergii |volume=2004 |page=e.T46004A11028056 |doi=10.2305/IUCN.UK.2004.RLTS.T46004A11028056.en |access-date=15 November 2021}}

|genus = Arachnothryx

|species = fosbergii

|authority = Steyerm.

}}

Arachnothryx fosbergii is a species of flowering plant in the family Rubiaceae. It is endemic to Ecuador.