| Author | (L.) Scopoli | |
| Distribution | Found only in the northern Mountains. Specimens range from 1958-2019. Likely found elsewhere, at least in northwestern NC.
Native of Eurasia; in N.A. Que. to Ont. and MN, south to NC, TN, KS; also B.C. to WA. | |
| Abundance | Very rare to rare. | |
| Habitat | Moist to wet soil of marshes, streamsides, floodplains, meadows. Unlike nearly all other non-native members of the Caryophyllaceae, because this species usually occurs in somewhat natural habitats, mainly wetlands, it has the appearance of a native species; nearly all others grow in fields, roadsides, lawns, and other highly disturbed ground. | |
| Phenology | Flowering and fruiting May-October. | |
| Identification | Water Chickweed has the gestalt of a giant Common Chickweed (Stellaria media). The stems grow along the ground or are somewhat ascending. The leaves are ovate, sessile, and generally clasping the stem, tapered to a point. The white flowers are somewhat longer than the sepals and grow on long stalks. | |
| Taxonomic Comments | Formerly named as Stellaria aquatica.
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| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | GNR | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
