Lobelia monostachya

{{Short description|Species of flowering plant}}

{{Speciesbox

|image =

|status = CR

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Bruegmann, M.M. |author2=Caraway, V. |date=2003 |title=Lobelia monostachya |volume=2003 |page=e.T44069A10854725 |doi=10.2305/IUCN.UK.2003.RLTS.T44069A10854725.en |access-date=17 November 2021}}

|genus = Lobelia

|species = monostachya

|authority = (Rock) Lammers{{GRIN | accessdate=2011-02-26}}

}}

Lobelia monostachya, the one-stalked lobelia, is a species of flowering plant in the family Campanulaceae that is endemic to the island of O{{okina}}ahu in Hawaii. It inhabits cliffside mesic shrublands in the southern Ko{{okina}}olau Mountains at an elevation of {{convert|44|-|614|m|ft|abbr=on}}. It was previously believed to be extinct. In 1994 it was rediscovered and only 8 individuals are currently known to exist.USFWS. [http://ecos.fws.gov/docs/five_year_review/doc1847.pdf Lobelia monostachya Five-year Review.] January 2008. Associated native plants include Artemisia australis, Carex meyenii, Eragrostis spp., and Psilotum nudum.{{cite web |url=http://www.state.hi.us/dlnr/dofaw/cwcs/files/Flora%20fact%20sheets/Lob_mon%20plant%20NTBG_W.pdf |title=Lobelia monostachya |work=Hawaii's Comprehensive Wildlife Conservation Strategy |publisher=Hawaii Department of Fish and Wildlife |accessdate=2011-02-27 |url-status=dead |archiveurl=https://web.archive.org/web/20120603153619/http://www.state.hi.us/dlnr/dofaw/cwcs/files/Flora%20fact%20sheets/Lob_mon%20plant%20NTBG_W.pdf |archivedate=2012-06-03 }} It is threatened by habitat loss.