| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Caryophyllaceae | Sagina apetala | Annual Pearlwort | Disturbed areas. | Native of Europe. |  (c) Krieger, Markus - CC-BY |
| Caryophyllaceae | Sagina decumbens ssp. decumbens | Eastern Pearlwort, Annual Pearlwort | Disturbed ground, fields, cracks in pavement or sidewalks. | NB west to IL and MO, south to c. peninsular FL and TX, with adventive occurrences farther west. |  (c) Sorrie, Bruce A. - CC-BY |
| Caryophyllaceae | Sagina japonica | Japanese Pearlwort | Disturbed areas. | Native of e. Asia. Also naturalized in se. PA (Rhoads & Block 2007). |  (c) Danielson, Erik |
| Caryophyllaceae | Sagina procumbens | Northern Pearlwort, Bird's-eye, Perennial Pearlwort | Disturbed soils. | Native of Eurasia (or, perhaps, also ne. North America). Crow (1978) questioned whether S. procumbens is native at all in the Western Hemisphere. In North America, it is concentrated in two main regions, from NS and QC south to MD, and from sw. BC south to c. CA, with scattered occurrences elsewhere, such as around the Great Lakes, CO, AR, s. OH, and w. NC. Whether or not the species is native in the New World, the occurrence in NC (in a gravel parking lot on top of Roan Mountain) is almost certainly adventive. |  (c) Danielson, Erik |