Carex ulobasis

{{Short description|Species of plant}}

{{Use dmy dates|date=February 2024}}

{{Speciesbox

| image =

| genus = Carex

| species = ulobasis

| authority = V.I.Krecz.

}}

Carex ulobasis, also known as montane sedge,{{Cite book|url=http://www.forest.go.kr/kna/special/download/English_Names_for_Korean_Native_Plants.pdf|title=English Names for Korean Native Plants|publisher=Korea National Arboretum|year=2015|isbn=978-89-97450-98-5|location=Pocheon|pages=388|access-date=30 April 2023|via=Korea Forest Service|url-status=dead|archive-url=https://web.archive.org/web/20170525105020/http://www.forest.go.kr/kna/special/download/English_Names_for_Korean_Native_Plants.pdf|archive-date=25 May 2017}} is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of eastern Russia in the north to Korea in the south.{{cite web |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:302798-1|title=Carex ulobasis V.I.Krecz. |access-date=29 April 2023 |publisher=Kew Science – Plants of the World Online}}

The sedge has a short and woody rhizome with densely tufted red-brown coloured culms that are {{cvt|15|to|25|cm}} in height. The culms are triangular in cross section with a smooth lower portion but with a rougher texture toward the ends. The culms are sheathed at the base but the sheaths will crumble into fibres over time.{{cite web|url=http://www.worldfloraonline.org/taxon/wfo-0000352224|title=Carex ulobasis V.I.Krecz. |access-date=29 April 2023 |publisher=World Flora Online}}