Common Corncockle, Common Corn-cockle, Corncockle, Corn Campion: Agrostemma githago var. githago - Non-native from Europe.
Rock Sandwort: Arenaria montana
Marsh Sandwort: Arenaria paludicola (Synonyms: Alsine palustris, Minuartia paludicola) - Native. Presumed to be extirpated from the Washington coast.
Thyme-leaf Sandwort: Arenaria serpyllifolia var. serpyllifolia (Synonym: Arenaria serpyllifolia ssp. serpyllifolia) - Non-native from Europe.
Sweet William Catchfly: Atocion armeria (Synonym: Silene armeria) - Non-native from Europe.
Sandcarpet, Sandmat: Cardionema ramosissimum (Synonym: Cardionema ramosissima) -
Chickweeds and Mouse Ears: The Genus Cerastium -
Sandworts: The Genus Cherleria (formerly the Genus Minuartia) -
Shore Whitlow-wort, Strapwort: Corrigiola litoralis ssp. litoralis -
Carnations and Pinks: The Genus Dianthus -
Sandworts: The Genus Eremogone -
Baby's-breath, Baby's Breath: Gypsophila paniculata (Synonym: Gypsophila paniculata var. paniculata) -
Green Carpet: Herneria glabra -
Hairy Rupturewort: Herniaria hirsuta var. cinerea (Synonym: Herniaria hirsuta ssp. hirsuta) -
Jagged Chickweed: Holosteum umbellatum ssp. umbellatum -
Sea Purslane, Seabeach Sandwort, Seaside Sandplant: Honckenya peploides ssp. major (Synonyms: Arenaria peploides, Arenaria peploides ssp. maor, Arenaria peploides var. major, Arenaria peploides var. maxima, Arenaria peploides var. oblongifolia, Honckenya oblongifolia, Honckenya peploides, Honckenya peploides var. major) -
Mullein Pink, Rose Campion: Lychnis coronaria (Synonyms: Agrostemma coronaria, Silene coronaria) -
Sandworts: The Genus Minuartia -
Bluntleaf Sandwort, Blunt-leaved Sandwort: Moehringia lateriflora (Synonyms: Arenaria lateriflora, Arenaria lateriflora var. angustifolia, Arenaria lateriflora var. lateriflora, Arenaria lateriflora var. taylorae, Arenaria lateriflora var. tenuicaulis) -
Bigleaf Sandwort, Big-leaved Sandwort, Large-leaf Sandwort: Moehringia macrophylla (Synonym: Arenaria macrophylla) -
Munchkin Chickweed, Upright Chickweed: Moenchia erecta ssp. erecta (Synonym: Sagina erecta) -
Giant Chickweed, Water Chickweed: Myosoton aquaticum (Synonyms: Alsine aquatica, Cerastium aquaticum, Stellaria aquatica) -
San Francisco Whitlow Wort: Paronychia franciscana -
Hairy Pink: Petrorhagia dubia (Synonyms: Dianthus veultinus, Kohlrauschia velutina, Petrorhagia velutina, Tunica velutina)
Fourleaf Manyseed, Four-leaved Allseed: Polycarpon tetraphyllum ssp. tetraphyllum -
Sticky Starwort, Sticky Chickweed, Tuber Starwort: Pseudostellaria jamesiana (Synonym: Stellaria jamesiana) -
Sandworts and Stitchworts: The Genus Sabulina -
Pearlworts: The Genus Sagina -
Rock Soapwort: Saponaria ocymoides -
Bouncing Bet, Bouncing-bet: Saponaria officinalis -
Annual Knawel, German Knotgrass: Scleranthus annuus ssp. annuus (Synonym: Scleranthus annuus) -
Campions and Catchflys: The Genus Silene -
Cornspurrey, Cornspurry, Corn Spurry, Stickwort: Spergula arvensis (Synonym: Spergula arvense var. sativa, Spergula arvensis ssp. arvensis, Spergula arvensis var. arvensis, Spergula arvensis var. sativa, Spergula sativa) -
Sandspurrys: The Genus Spergularia -
Chickweeds and Starworts: The Genus Stellaria -
Cowcockle, Cowherb, Cow Soapwort: Vaccaria hispanica (Synonyms: Sapnonaria vaccaria, Vaccaria segetalis, Vaccaria vulgaris) -