B, opposite leaf arrangement. C elongated fruiting stem. D trailing growth form and E, compact growth form that has been distinguished by some authors using the name 'smalliana'. Leaves with hydathodes . Many hydathodes have white calcite deposits at leaf tip.
Hydathodes are small openings on the leaf blades which exude water.
Leaves also have a ciliated leaf margins. Nunavut, Cornwallis Island, Resolute Bay. Each stem of leaves about 0.7 cm across. Close-up of flower . Nunavut, Ellesmere Island, Alexandra Fiord.