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
- ↑ Tropicos
- ↑ "Vernonia lettermannii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 29 July 2015.
- ↑ Flora of North America
- ↑ Gray, Asa. Notes on Some Compositae 78. 1880.
- ↑ Robinson, H. 1999. Generic and subtribal classification of American Vernonieae. Smithsonian Contributions in Botany 89: i–iii, 1–116.
- ↑ 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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