Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018. Scientific name: Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén; old Juncus balticus Willd. Common name(s): mountain rush, Baltic rush Link(s): USDA PLANTS Profile, NPIN Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and