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Vernonia lettermannii

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Vernonia lettermannii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: 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

[edit]
  1. ^ Tropicos
  2. ^ USDA, NRCS (n.d.). "​Vernonia lettermannii​". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. 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.