Juncus secundus

{{Short description|Species of plant}}

{{Speciesbox

|image=Juncus secundus NRCS-1.jpg

|image_caption=Inflorescence

|genus=Juncus

|species=secundus

|authority=P.Beauv. ex Poir.

|synonyms_ref=

|synonyms=Juncus tenuis var. secundus {{small|(P.Beauv. ex Poir.) Engelm.}}

}}

Juncus secundus, the lopsided rush, one-sided rush, or second rush, is a species of flowering plants in the family Juncaceae. It is native to eastern North America and has been introduced to Primorsky Krai in Russia.{{cite POWO |id=443463-1 |title=Juncus secundus P.Beauv. ex Poir. |access-date=2 January 2023 }}{{cite web |url=https://adminplants.sc.egov.usda.gov/java/profile?symbol=JUSE |title=Juncus secundus P. Beauv. ex Poir. lopsided rush |author= |date= |website=PLANTS Profile |publisher=USDA Natural Resources Conservation Service |access-date=2 January 2023 }} It is typically found in serpentine, granite, and other barrens.{{cite journal |title=Further Notes on the Flora of the Conowingo or Serpentine Barrens of Southeastern Pennsylvania |last1=Pennell |first1=Francis W. |journal=Proceedings of the Academy of Natural Sciences of Philadelphia |year=1912 |volume=64 |pages=520–539 |jstor=4063481 }}{{cite book |title=A Fifth Checklist of Tennessee Vascular Plants |last1=Chester |first1=Edward W. |year=2009 |isbn=9781889878263 }}