Vascular Plants of North Carolina
Account for Miniature Beefsteak-plant - Mosla scabra   (Thunb.) C.Y.Wu & H.W.Li
Members of Lamiaceae:
Only member of Mosla in NC.
Flora of SE USGoogle Images
Section 6 » Family Lamiaceae
Author(Thunb.) C.Y.Wu & H.W.Li
DistributionThere is still some confusion whether all or nearly all of the NC records refer now (2025) to Mosla scabra or M. dianthera, if these are even both good entities. It appears (Sept 2025) that our records pertain to D. scabra and we will treat them as such until informed otherwise. Rapidly increasing/spreading in the western part of the state. There is a specimen from Cherokee County, Forest Service road 5 miles WNW of Murphy, 4 October 2011, Ed Schwartzman s.n. (NCU, WCUH). There are now recent -- 2020 and later -- photo records on iNaturalist from Transylvania, McDowell, Anson, and Wake counties; plus a photo record for Avery County in 2022. A sight report was made in Buncombe County in 2024.

Native to Eastern Asia; in N.A. IN, KY, TN, AL, GA, NC.
AbundanceApparently rare, but Weakley (2018) states that it is becoming a noxious weed in KY, TN, and western NC.
HabitatMargin of US Forest Service road, other disturbed ground.
PhenologyFlowering and fruiting August-September.
IdentificationThis mint is about 1-3 feet tall, with well-spaced, lance-shaped to ovate paired leaves. The inflorescences arise terminally and from upper leaf axils; they are slender and hold many flowers. The upper calyx lobes are curved a bit upwards; the lower ones are straight. The corollas are small, tubular and with the lower lip rather downcurved, pale pink in color.
Taxonomic CommentsSee above. Neither NatureServe nor iNaturalist recognize M. dianthera at all, but they do for M. scabra. At any rate, it appears that nearly all of the NC records refer to the same taxon.

Other Common Name(s)
State RankSE
Global RankGNR
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Photo Gallery
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Becky DillAnson County roadside, 28 Sept 2025. AnsonPhoto_non_natural
Becky DillAnson County roadside, 28 Sept 2025. AnsonPhoto_non_natural
Becky DillAnson County roadside, 28 Sept 2025. AnsonPhoto_non_natural
Jess SchanerAvery County; August 2022; growing in a bog AveryPhoto_non_natural
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