Lysimachia venosa

Lysimachia venosa is a rare species of flowering plant in the family Primulaceae known by the common name veined yellow loosestrife.[1] It is endemic to Hawaii, where it is known only from the island of Kauai.[2] The plant was only collected twice, last in 1911, but in 1991, a branch was discovered that had broken off the steep cliffs above the headwaters of the Wailua River. The branch was from a plant of this species and may have fallen from the summit of Mount Waialeale. No more specimens have been found since and the plant may be extinct, but some experts believe it may still exist in unsurveyed parts of the habitat.[2] It was federally listed as an endangered species of the United States in 2010.[2]

Lysimachia venosa

Critically Imperiled  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Primulaceae
Genus: Lysimachia
Species:
L. venosa
Binomial name
Lysimachia venosa

This shrub grows at least 0.5 to 1.0 m in height. The oval leaves are up to 10 cm long by 4.8 cm wide. The flowers have dark red petals between 1 and 2 cm long.[3]

References
  1. USDA Plants Profile
  2. USFWS. Determination of Endangered Status for 48 Species on Kauai and Designation of Critical Habitat; Final Rule. Federal Register April 13, 2010.
  3. 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.
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