- Arenaria capillaris — fescue sandwort
- Arenaria congesta — capitate sandwort
- Arenaria humifusa — creeping sandwort
- Arenaria longipedunculata — low sandwort
- Cerastium alpinum — alpine chickweed
- Cerastium arvense — mouse-ear chickweed
- Cerastium beeringianum — Bering Sea chickweed
- Cerastium brachypodum — mouse-ear chickweed
- Cerastium cerastioides — starwort chickweed
- Cerastium fischerianum — Fischer's chickweed
- Cerastium maximum — great chickweed
- Cerastium nigrescens — black mouse-ear chickweed
- Cerastium nutans — nodding chickweed
- Cerastium regelii — Regel's chickweed
- Dianthus repens — carnation
- Honckenya peploides — seabeach sandwort
- Lychnis alpina — alpine campion
- Minuartia arctica — Arctic stitchwort
- Minuartia austromontana — Columbian stitchwort
- Minuartia biflora — mountain stitchwort
- Minuartia dawsonensis — rock stitchwort
- Minuartia elegans — Ross' stitchwort
- Minuartia groenlandica — mountain sandwort
- Minuartia litorea
- Minuartia macrocarpa — longpod stitchwort
- Minuartia marcescens — serpentine stitchwort
- Minuartia michauxii — Michaux's stitchwort
- Minuartia nuttallii — Nuttall's stitchwort
- Minuartia obtusiloba — alpine stitchwort
- Minuartia pusilla — dwarf stitchwort
- Minuartia rossii — Ross' stitchwort
- Minuartia rubella — boreal stitchwort
- Minuartia stricta — rock sandwort
- Minuartia tenella — slender stitchwort
- Minuartia yukonensis — Yukon stitchwort
- Moehringia lateriflora — grove sandwort
- Moehringia macrophylla — largeleaf sandwort
- Paronychia canadensis — forked nailwort
- Paronychia fastigiata — cluster-stemmed nailwort
- Paronychia sessiliflora — low nailwort
- Sagina caespitosa — tufted pearlwort
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- Sagina decumbens — small-flowered pearlwort
- Sagina maxima — sticky-stem pearlwort
- Sagina nivalis — snow pearlwort
- Sagina nodosa — knotted pearlwort
- Sagina saginoides — Arctic pearlwort
- Silene acaulis — moss campion
- Silene antirrhina — sleepy catchfly
- Silene douglasii — Douglas' campion
- Silene drummondii — Drummond's campion
- Silene involucrata — Arctic catchfly
- Silene menziesii — Menzies' pink
- Silene parryi — Parry's campion
- Silene repens — creeping catchfly
- Silene scouleri — Scouler's catchfly
- Silene sorensenis — Sorensen's catchfly
- Silene spaldingii — Spalding's campion
- Silene taimyrensis — Taimyr catchfly
- Silene tayloriae — Peel River catchfly
- Silene uralensis — apetalous catchfly
- Silene x hampeana
- Spergularia canadensis — Canada sandspurry
- Spergularia macrotheca — beach sandspurry
- Spergularia salina — saltmarsh sandspurry
- Stellaria alaskana — Alaska starwort
- Stellaria alsine — trailing stitchwort
- Stellaria americana — American stitchwort
- Stellaria borealis — northern stitchwort
- Stellaria calycantha — northern stitchwort
- Stellaria ciliatosepala — tundra stitchwort
- Stellaria crassifolia — fleshy stitchwort
- Stellaria crassipes — tundra starwort
- Stellaria crispa — crimped stitchwort
- Stellaria dicranoides — matted starwort
- Stellaria humifusa — creeping sandwort
- Stellaria longifolia — longleaf stitchwort
- Stellaria longipes — long-stalked stitchwort
- Stellaria nitens — shiny stitchwort
- Stellaria obtusa — Rocky Mountain stitchwort
- Stellaria umbellata — umbellate stitchwort
- Wilhelmsia physodes — merkia
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