| Author | L. | |
| Distribution | Known only from one collection in 1970 from Watauga County, by Radford and Moore. This is a major southward disjunction from the rest of the range.
This Northern species has a very wide range from coast to coast. It occurs across Canada and south to NJ, PA, OH, MO, and the Western states. The disjunction to northwestern NC is several hundred miles. | |
| Abundance | Extremely rare when discovered and collected in 1970, and now considered to be of historical occurrence. It is a State Special Concern species. | |
| Habitat | The NC record was from a high elevation bog, at roughly 4300 feet elevation. This is a species of very shallow water, in its range, but occurs in bogs, fens, and other cool sites. |
| Phenology | Blooms from April into June, and fruits shortly after flowering. | |
| Identification | This is a very small species of very shallow, cold water habitats, with a flowering stem emerging from the water to a height of 4-6 inches high. The leaves creep horizontally on the bottom of the water, normally just an inch or several inches below the surface. This species is identified by its different flower shape from all other NC bladderworts. The 2-6 yellow flowers have a much longer lower lip than the upper; the flower is usually extended horizontally, such that the 1/4-inch long lower lip extends almost like a small tongue well beyond the short upper lip. Most other species have a more rounded or squared flower shape, with the lower lip being wide and often semi-circular in shape. Check references for other characters that separate this from other yellow-flowered bladderworts. The site where found in 1970 is home to a number of other southerly disjunct species, including Canada Yew (Taxus canadensis); many have their only NC occurrence there. | |
| Taxonomic Comments | None
| |
| Other Common Name(s) | Small Bladderwort | |
| State Rank | SH | |
| Global Rank | G5 | |
| State Status | SC-H | |
| US Status | | |
| USACE-agcp | OBL link |
| USACE-emp | OBL link |
