Trillium tennesseense

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Trillium tennesseense
Status TNC G1.svg
Critically Imperiled  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Melanthiaceae
Genus: Trillium
Species:
T. tennesseense
Binomial name
Trillium tennesseense
E.E.Schill. & Floden [2]

Trillium tennesseense, the Tennessee trillium, [3] is a species of flowering plant in the family Melanthiaceae. It is found exclusively within two counties in northeastern Tennessee. [4] Due to its limited range, it is designated as a critically imperiled species.

Contents

Description

Trillium tennesseense most resembles T. oostingii but the two species differ with respect to several features. In particular, T. tennesseense has filaments nearly equal in length to its ovary (vs. less than half the length), a shorter ovary (2–4 mm vs. 6–16 mm), and stigma lobes distinctly longer than the ovary (vs. equal to the ovary length). [5] When the plant is in full bloom, the flower emits a smell reminiscent of old-fashioned shoe polish. [6]

Taxonomy

Trillium tennesseense was first described and named by Edward E. Schilling and Aaron J. Floden in 2013. [2] As of March 2025, the name Trillium tennesseenseE.E.Schill. & Floden is widely accepted. [1] [7] [8] A few authorities still regard it as a synonym for Trillium lancifolium Raf. [9] It is a member of the sessile-flowered trilliums (Trillium subgen. Sessilia), a group of species typified by Trillium sessile. [10]

Conservation

The global conservation status of Trillium tennesseense is Critically Imperiled (G1). [1] The State of Tennessee lists the species as endangered. [7]

The IUCN Red List considers Trillium tennesseense to be a synonym of Trillium lancifolium . [11] However, based on IUCN criteria, Trillium tennesseense is Critically Endangered (CR). [12]

References

  1. 1 2 3 "Trillium tennesseense". NatureServe Explorer. NatureServe. Retrieved 4 April 2023.
  2. 1 2 "Trillium tennesseenseE.E.Schill. & Floden". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens . Retrieved 20 March 2023.
  3. ↑ Stritch, Larry. "Tennessee Trillium (Trillium tennesseense)". United States Forest Service . Retrieved 22 September 2019.
  4. ↑ "Trillium tennesseense". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 22 September 2019.
  5. ↑ Schilling, Edward E.; Floden, Aaron; Farmer, Susan B. (June 2013). "A New Sessile-Flowered Trillium Species from Tennessee". Castanea. 78 (2): 140–147. doi:10.2179/12-043. S2CID   86058874.
  6. ↑ Warfield, Meredith (April 9, 2014). "New Trillium Species Discovered in Eastern Tennessee". The Appalachian Voice. Retrieved 22 September 2019.
  7. 1 2 Crabtree, Todd. "Tennessee Natural Heritage Program: Rare Plant List 2021" (PDF). Tennessee Department of Environment and Conservation. Retrieved 26 April 2022.
  8. ↑ "Trillium tennesseenseE.E.Schill. & Floden". Flora of the Southeastern United States (2022 Edition). Retrieved 20 March 2023.
  9. ↑ NRCS. "Trillium lancifolium". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 20 March 2023.
  10. ↑ Lampley et al. (2022), p. 282.
  11. ↑ "Narrow-leaved Trillium (Trillium lancifolium)". The IUCN Red List of Threatened Species, Version 2022-2. Retrieved 4 April 2023.
  12. ↑ Meredith et al. (2022), p. 52.

Bibliography


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