Flora of North America species comparison

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Bacopa caroliniana

Bacopa egensis

blue water-hyssop, lemon bacopa

Brazilian water-hyssop
Habit Perennials, aromatic. Perennials.
Stems

prostrate, 15–30 cm, hairy.

prostrate, 15–30 cm, hairy.
Leaves

hairy;

blade base broadly cuneate, margins entire, apex obtuse.

glabrous;

blade base narrowly cuneate, margins crenate, apex rounded with a narrow petiole-like base.
Pedicels

5–15 mm;

bracteoles present.

10–12 mm.
Flowers

sepals 5, ovate, calyx bilaterally symmetric;

corolla violet-blue with violet-blue throat, 10–13 mm, lobes 4;

stamens 2–4, didynamous.

sepals 4(or 5), ovate to oblong, calyx radially symmetric;

corolla white with yellow throat, 3–5 mm;

stamens 3 or 4, didynamous.

Bacopa caroliniana

Bacopa egensis
Phenology Flowering Jun–Nov. Flowering Aug–Oct.
Habitat Marshes, swamps, margins of streams, pastures. Shallow, quiescent water, lakes.
Elevation 0–300 m. (0–1000 ft.) 0–20 m. (0–100 ft.)
Distribution
from FNA
AL; FL; GA; LA; MD; MS; NC; SC; TX; VA
[WildflowerSearch map]
[BONAP county map]
from FNA
AR; LA; Central America (Costa Rica, Nicaragua); South America (Brazil) [Introduced in North America; introduced also in w, c Africa (Republic of Cameroon, Democratic Republic of Congo, Ghana, Nigeria, Senegal)]
[BONAP county map]
Discussion

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Bacopa egensis was first collected in the United States by Josiah Hale in the early 1800s (C. E. Depoe 1969). There are subsequent collections from Arkansas and Louisiana.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 261. FNA vol. 17, p. 262.
Parent taxa Plantaginaceae > Bacopa Plantaginaceae > Bacopa
Sibling taxa
B. egensis, B. eisenii, B. innominata, B. monnieri, B. repens, B. rotundifolia
B. caroliniana, B. eisenii, B. innominata, B. monnieri, B. repens, B. rotundifolia
Synonyms Obolaria caroliniana, Hydrotrida caroliniana Hydranthelium egense
Name authority (Walter) B. L. Robinson: Rhodora 10: 66. (1908) (Poeppig) Pennell: Proc. Acad. Nat. Sci. Philadelphia 98: 96. (1946)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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