Vascular Plants of North Carolina
Account for Southern Rockbell - Wahlenbergia marginata   (Thunberg) A.L.P.P. de Candolle
Members of Campanulaceae:
Only member of Wahlenbergia in NC.
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Section 6 » Order Campanulales » Family Campanulaceae
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Author(Thunberg) A.L.P.P. de Candolle
DistributionConfined to the Sandhills and southern Coastal Plain; plus a 2021 photo from Beaufort County on the outer Coastal Plain (Goose Creek SP). First collected in 1957 in Robeson County. It is spreading slowly and will be found in additional counties.

Native of eastern Asia and Oceania; in N.A. NC to FL, TX, AR.
AbundanceFairly common to common, notably increasing over the years, and spreading in range. Individual populations may support hundreds of plants, while others just a few.
HabitatDry to mesic sandy roadsides, fields, fallow cropfields, granitic flatrocks (Anson Co.), disturbed soils, yard weed.
PhenologyFlowering April-October (rarely earlier or later).
IdentificationSouthern Rockbell is a slender wisp of a plant that may grow to 1.5 feet, the stems single to many. The leaves are linear. The flowers grow on slender stalks, are 5-8 mm long, pale to medium blue, tubular with lobes generally spreading. Without the flowers, the plants almost disappear and would be easily overlooked.
Taxonomic Comments
Other Common Name(s)
State RankSE
Global RankG4?
State Status
US Status
County Map - click on a county to view source of record.
Photo Gallery
B.A. SorrieEdge of cropfield, Whispering Pines, June 2010. MoorePhoto_non_natural
Larry ChenBeaufort County, 2021. BeaufortPhoto_non_natural

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