Vernonia lettermannii

Vernonia lettermannii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Vernonia
Species: V. lettermannii
Binomial name
Vernonia lettermannii
Engelm. ex A. Gray
Synonyms[1]

Cacalia lettermannii (Engelm. ex A. Gray) Kuntze

Vernonia lettermannii, the narrowleaf ironweed,[2] is a plant species known only from Arkansas and Oklahoma. It grows on floodplains and terraces at elevations of 100–200 m (330–660 ft).[3]

Vernonia lettermannii is a perennial herb up to 60 cm (24 in) tall. Leaves are filiform (thread-shaped), up to 9 cm (3.5 in) long but less than 3 mm (0.12 in) wide. Flower heads are purple, arranged as a corymb.[4][5][6]

References

  1. Tropicos
  2. "Vernonia lettermannii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 29 July 2015.
  3. Flora of North America
  4. Gray, Asa. Notes on Some Compositae 78. 1880.
  5. Robinson, H. 1999. Generic and subtribal classification of American Vernonieae. Smithsonian Contributions in Botany 89: i–iii, 1–116.
  6. Cronquist, A.J. 1980. Asteraceae. 1: i–xv, 1–261. In Vascular Flora of the Southeastern United States. The University of North Carolina Press, Chapel Hill.
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