Hordeum aegiceras

{{Short description|Species of plant}}{{Use dmy dates|date=February 2024}}

{{Speciesbox

| image =

| genus = Hordeum

| species = aegiceras

| authority = Nees ex Royle

| synonyms_ref =

| synonyms =

• Critho aegiceras {{small|(Nees ex Royle) E.Mey.}}
• Hordeum coeleste var. trifurcatum {{small|Schltdl.}}
• Hordeum nepalense {{small|Sweet}}
• Hordeum trifurcatum {{small|(Schltdl.) Wender.}}
• Hordeum vulgare subsp. aegiceras {{small|(Nees ex Royle) Á.Löve}}
• Hordeum vulgare var. aegiceras {{small|(Nees ex Royle) Aitch.}}
• Hordeum vulgare var. trifurcatum {{small|(Schltdl.) Alef.}}

}}

Hordeum aegiceras (syn. Hordeum vulgare var. trifurcatum), the grim barley, is a species of flowering plant in the family Poaceae.{{cite book |title=Diversity and Dynamics in Forest Ecosystems |last1=Kumar |first1=Munesh |last2=Pala |first2=Nazir A. |last3=Bhat |first3=Jahangeer A. |date=28 December 2021 |isbn=9781000344011 |publisher=CRC Press }}{{cite journal |title=Checklist of the grasses of India |date=2020 |last1=Kellogg |first1=Elizabeth |last2=Abbott |first2=J. Richard |last3=Bawa |first3=Kamaljit |last4=Gandhi |first4=Kanchi |last5=Kailash |first5=B. R. |last6=Ganeshaiah |first6=K. N. |last7=Babu Shrestha |first7=Uttam |last8=Raven |first8=Peter |journal=PhytoKeys |issue=163 |pages=1–560 |doi=10.3897/phytokeys.163.38393 |doi-access=free |pmid=37397271 |pmc=10311516 }} It is native to Mongolia, Tibet, Qinghai, and central China, and it has been introduced into other locales around the world, including Argentina and the U.S. state of Illinois.{{cite POWO |id=405138-1 |title=Hordeum aegiceras Nees ex Royle |access-date=18 February 2024 }} An annual reaching {{cvt|40|to|80|cm}}, it is cultivated at elevations above {{cvt|3000|m}}.