Ross Sandwort, Columbian Stitchwort, Southern Mountain Sandwort: Minuartia austromontana (Synonyms: Arenaria rossii ssp. columbiana, Arenaria rossii var. columbiana, Minuartia elegans) - Perennial. Tufted alpine / subalpine plants. Plants glabrous with flower stems from 1-3 cm high. Leaves linear, 1-nerved and 4-6 mm long. Sepals 2.5 mm long. Wallowa Mts. from the canyon of Hurricane Creek.
Brittle Sandwort, Brittle Stictchwort, Nuttall's Sandwort, Brittle Stitchwort: Minuartia nuttallii var. fragilis (Synonyms: Arenaria nuttallii ssp. fragilis, Arenaria nuttallii var. fragilis, Minuartia nuttallii ssp. fragilis) - Perennial. Plants glandular-hairy. Flower stems brittle, shattering at the nodes. Leaves arched or recurved. Leaves yellow-green, 3-nerved, linear-lanceolate, sharp-tipped and 3-10 mm long. Sepals over 3 mm long, 3-vened, sharp with a long point.
Brittle Sandwort, Slener Sandwort: Minuartia nuttallii ssp. gracilis (Synonyms: Arenaria nuttallii ssp. gracilis, Arenaria nuttallii var. gracilis, Minuartia nuttallii ssp. gracilis) -
Nuttall's Sandwort: Minuartia nuttallii var. nuttallii (Synonyms: Alsinopsis occidentalis, Arenaria nuttallii, Arenaria nuttallii ssp. nuttallii, Arenaria nuttallii var. nuttallii, Arenaria pungens, Minuartia nuttallii ssp. nuttallii, Minuopsis nuttallii) - Perennial. Plants glandular-hairy. Flower stems brittle, shattering at the nodes. Leaves straight and ascending. Leaves greenish, 3-nerved, linear-lanceolate, sharp-tipped and 3-10 mm long. Sepals over 3 mm long, 3-vened, sharp with a long point.
Alpine Sandwort, Arctic Sandwort, Twinflower Sandwort: Minuartia obtusiloba (Synonyms: Alsinopsis obtusiloba, Arenaria obtusiloba, Arenaria sajanensis, Lidia obtusiloba, Minuartia sajanensis) -
Annual Sandwort, Dwarf Sandwort: Minuartia pusilla (Synonyms: Arenaria pusilla, Minuartia pusilla var. pusilla) - Annual. Plants glaucous and 2-5 cm high. Leaves linear, 1-nerved, and 2-4 mm long and less than 1.5 mm wide.
Boreal Sandwort, Beautiful Sandwort, Boreal Stitchwort, Reddish Sandwort: Minuartia rubella (Synonyms: Arenaria propinqua, Arenaria rubella, Arenaria verna var. propinqua, Arenaria verna var. rubella, Minuartia rossii var. orthotrichoides, Tryphane rubella) - Perennial. Cushion plants with flower stems 2-5 flowered and 1-10 cm high. Plants glandular-hairy. Flower stems not brittle or shattering at the nodes. Leaves numerous, 4-6 mm long, linear with obtuse tips. Sepals 3-4 mm long, 1-veined., sharp but not pointed.