Arctic Sandwort, Alpine Sandwort, Alpine Stitchwort, Twinflower Sandwort, Twin-flower Sandwort: Cherleria obtusiloba (Synonyms: Arenaria obtusiloba, Minuartia obtusiloba) -
Nuttall's Sandwort: Sabulina nuttallii var. nuttallii (Synonyms: Arenaria nuttallii var. nuttallii, Arenaria pungens, Minuartia nuttallii ssp. nuttallii, Minuartia nuttallii var. nuttallii, Minuopsis pungens) -