Bacopa caroliniana

(Walter) B. L. Robinson

Rhodora 10: 66. 1908

Common names: Blue water-hyssop lemon bacopa
Basionyms: Obolaria caroliniana Walter Fl. Carol., 166. 1788
Synonyms: Hydrotrida caroliniana (Walter) Small
Treatment appears in FNA Volume 17. Treatment on page 261. Mentioned on page 260.
Perennials, aromatic. Stems prostrate, 15–30 cm, hairy. Leaves hairy; blade base broadly cuneate, margins entire, apex obtuse. Pedicels 5–15 mm; bracteoles present. Flowers: sepals 5, ovate, calyx bilaterally symmetric; corolla violet-blue with violet-blue throat, 10–13 mm, lobes 4; stamens 2–4, didynamous.

Phenology: Flowering Jun–Nov.
Habitat: Marshes, swamps, margins of streams, pastures.
Elevation: 0–300 m.


Ala., Fla., Ga., La., Md., Miss., N.C., S.C., Tex., Va.


Bacopa caroliniana is used in aquascaping in freshwater aquariums. The species can be propagated vegetatively through cuttings. The leaves of B. caroliniana are lemon scented when crushed.

Selected References


Lower Taxa


Facts about "Bacopa caroliniana"
AuthorAdjoa Richardson Ahedor +
Authority(Walter) B. L. Robinson +
BasionymsObolaria caroliniana +
Common nameBlue water-hyssop + and lemon bacopa +
DistributionAla. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.C. +, S.C. +, Tex. + and Va. +
Elevation0–300 m. +
HabitatMarshes, swamps, margins of streams, pastures. +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering Jun–Nov. +
Publication titleRhodora +
Publication year1908 +
ReferenceNone +
Source xml grained fna xml/V17/V17 631.xml +
Special statusWeedy + and Endemic +
SynonymsHydrotrida caroliniana +
Taxon familyPlantaginaceae +
Taxon nameBacopa caroliniana +
Taxon parentBacopa +
Taxon rankspecies +
VolumeVolume 17 +