''Lysimachia pendens'' is a rare species of flowering plant in the family

Primulaceae The Primulaceae , commonly known as the primrose family (but not related to the evening primrose family), are a family of herbaceous and woody flowering plants including some favourite garden plants and wildflowers. Most are perennial though som ...

known by the common name broad-leaf yellow loosestrife.USDA Plants Profile
/ref> It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to Hawaii, where there is a single occurrence known on the island of Kauai.''Lysimachia maxima''.

The Nature Conservancy The Nature Conservancy (TNC) is a global environmental organization headquartered in Arlington, Virginia. it works via affiliates or branches in 79 countries and territories, as well as across every state in the US. Founded in 1951, The Nat ...

. It was federally listed as an endangered species of the United States in 2010. This shrub was described as a new species in 1997 when one population of '' Lysimachia filifolia'' plants was determined to be different from the others and not part of that species.Marr, K. L and B. A. Bohm. (1997)
A taxonomic revision of the endemic Hawaiian ''Lysimachia'' (Primulaceae) including three new species.
''Pac Sci'' 51(3) 254-87. The leaves are wider and hairier than those of ''L. filifolia''. This plant occurs at one location at the headwaters of the north fork of the Wailua River of Kauai, where it grows alongside the newly described '' Lysimachia iniki''. The habitat is made up of wet, mossy cliffs. This shrub has hanging branches, the new growth covered in tan hairs. The lance-shaped leaves are closely spaced on the branches and measure roughly 2 to 4 centimeters long by 2 to 4 millimeters wide. The flowers have green or red-tinged

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coine ...

s and red petals each just under a centimeter in length. The plant is threatened by the

invasion An invasion is a Offensive (military), military offensive in which large numbers of combatants of one geopolitics, geopolitical Legal entity, entity aggressively enter territory (country subdivision), territory owned by another such entity, gen ...

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived ther ...

of plants in its habitat. Landslides have destroyed many of the plants. There are only eight individuals of this species remaining (as of April 2010).

References

pendens Endemic flora of Hawaii Plants described in 1997 {{Primulaceae-stub