Trautvetteria fonticalcarea
| Trautvetteria fonticalcarea | |
|---|---|
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| Trautvetteria fonticalcarea in bloom | |
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| Trautvetteria fonticalcarea close-up of flowers | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Ranunculales |
| Family: | Ranunculaceae |
| Genus: | Trautvetteria |
| Species: | T. fonticalcarea |
| Binomial name | |
| Trautvetteria fonticalcarea Floden | |
Trautvetteria fonticalcarea is a species of flowering plant in the family Ranunculaceae. It is endemic to northeastern Tennessee in the southeastern United States.[2]
Description
Trautvetteria fonticalcarea is a rhizomatous perennial herb (forb) with basal and alternate leaves and small white, actinomorphic flowers.[3] Basal leaves are shallowly 3- (occasionally 5-) lobed with rounded or deltoid lobes, coriaceous texture, and crenate to dentate margins, with strongly reticulate venation.[4]
Habitat and ecology
The species is restricted to highly specialized calcareous wetland habitats, particularly dolomitic seeps and fens associated with groundwater discharge systems.[1][4] It occurs in hydric, alkaline soils derived from dolomite and is considered a habitat specialist with narrow ecological requirements.[3]
Distribution
Trautvetteria fonticalcarea is narrowly endemic to northeastern Tennessee, where it is known from Campbell, Claiborne, and Union counties, primarily within the Powell River watershed.[4][1]
Taxonomy
Trautvetteria fonticalcarea was described by Aaron J. Floden in 2017 (published 2018) in Nordic Journal of Botany.[5] The type specimen was collected in Campbell County, Tennessee, and is deposited at the University of Tennessee Herbarium (TENN), with isotypes distributed to multiple herbaria.[5]
The species was previously included within Trautvetteria caroliniensis but is now recognized as distinct based on morphological characters and its restriction to calcareous seepage habitats.[4]
Conservation
According to NatureServe, Trautvetteria fonticalcarea is ranked G2 (imperiled), reflecting its narrow range, habitat specificity, and limited number of populations.[1] It is considered critically imperiled (S1) in Tennessee, the only state in which it occurs.[1]
Fewer than 25 sites are known, many supporting small populations, though some sites contain dozens of individuals.[1] While many populations are not currently under immediate threat, potential impacts include changes to groundwater flow associated with water use, which may alter the seepage habitats on which the species depends.[1]
Similar species
Trautvetteria fonticalcarea differs from Trautvetteria applanata and Trautvetteria caroliniensis in its shallowly lobed, coriaceous basal leaves with rounded lobes and strongly reticulate venation, as well as its restriction to calcareous seep habitats.[4]
References
- 1 2 3 4 5 6 7 "Trautvetteria fonticalcarea". NatureServe Explorer. Retrieved 10 April 2026.
- ↑ "Trautvetteria fonticalcarea Floden". Plants of the World Online. Retrieved 10 April 2026.
- 1 2 "Trautvetteria fonticalcarea". Tennessee-Kentucky Plant Atlas. 2025. Retrieved 10 April 2026.
- 1 2 3 4 5 "Trautvetteria fonticalcarea". Flora of the Southeastern United States. Retrieved 10 April 2026.
- 1 2 "Trautvetteria fonticalcarea Floden". International Plant Names Index. Retrieved 10 April 2026.