Vascular Plants of North Carolina
Account for Ozark Tassel-rue - Trautvetteria applanata   Greene
Members of Ranunculaceae:
Members of Trautvetteria with account distribution info or public map:
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Section 6 » Family Ranunculaceae
AuthorGreene
DistributionApparently limited in NC -- tentatively -- to the eastern Piedmont and Coastal Plain. Perhaps only two known sites in the state (Nash and Brunswick counties).

"E. KY, c. IN, wc. IL, and sc. MO south through e. and c. TN to nw. GA, c. AL, c. AR (Sundell et al. 1999), and ne. TX (Floden 2011)" (Weakley 2022).
AbundanceExtremely rare, and the Brunswick County site has apparently been destroyed by intensive forestry activities (Weakley 2022). The taxon is not yet in the NC NHP database. Despite being poorly known in the state, Weakley's (2022) map indicates "rare" in the Piedmont and the same in the Coastal Plain. Thus, the editors suggest a State Rank of S1 and a suggested status of Significantly Rare.
HabitatIn NC -- limited to areas over marl (Brunswick County) and moist streamsides (over presumed mafic rock). Elsewhere in the range, it is limited to limestone/dolomite habitats. The species occurs in a variety of habitats -- the Brunswick site is (was) a pine savanna, whereas the Nash County site is a damp to wet hardwood forest. To be looked for on riverbanks on limestone/dolomite rocks (such as in Madison County).
PhenologyApparently blooms from late May to July, and fruits in July and August.
IdentificationThe identification in Weakley's (2022) key is dependent on leaf shape and margins -- as well as rock/soil types and perhaps range. This species has "Leaf blade nearly pedate; leaf margin serrations deltoid or depressed-deltoid in shape, rounded or obtuse (and mucronate) at the apex", whereas T. caroliniensis has "Leaf blade palmately divided; leaf margin serrations lanceolate, acuminate or acute at the apex". See the Description of this genus in the T. caroliniensis account.
Taxonomic Comments"Trautvetteria populations in the Coastal Plain of NC, SC, and GA and lowermost Piedmont of NC are tentatively assigned here on partial morphological and molecular data" (Weakley 2022). Few references adopt this species, and even Weakley admits that assignment of the eastern NC populations to it are tenuous.

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Global RankGNA
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