Flora of North America species comparison

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Bacopa caroliniana

Bacopa repens

blue water-hyssop, lemon bacopa

creeping water-hyssop
Habit Perennials, aromatic. Annuals or perennials.
Stems

prostrate, 15–30 cm, hairy.

erect, 15–40 cm, hairy, glabrescent.
Leaves

hairy;

blade base broadly cuneate, margins entire, apex obtuse.

hairy, glabrescent;

blade base narrowly cuneate, margins entire, apex rounded.
Pedicels

5–15 mm;

bracteoles present.

1.5–15 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), oblong to lanceolate, calyx bilaterally symmetric;

corolla pink with pink throat or white with white throat, 2–5 mm;

stamens 4, didynamous.
2n

= 28.

Bacopa caroliniana

Bacopa repens
Phenology Flowering Jun–Nov. Flowering Jul–Sep.
Habitat Marshes, swamps, margins of streams, pastures. Muddy sites, pools, rice fields.
Elevation 0–300 m. (0–1000 ft.) 0–100 m. (0–300 ft.)
Distribution
from FNA
AL; FL; GA; LA; MD; MS; NC; SC; TX; VA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; FL; LA; SC; TX; Central America; West Indies (Greater Antilles, Lesser Antilles, Puerto Rico) [Introduced in North America; introduced also in Mexico, South America (Colombia), Asia (China)]
[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.)
Source FNA vol. 17, p. 261. FNA vol. 17, p. 263.
Parent taxa Plantaginaceae > Bacopa Plantaginaceae > Bacopa
Sibling taxa
B. egensis, B. eisenii, B. innominata, B. monnieri, B. repens, B. rotundifolia
B. caroliniana, B. egensis, B. eisenii, B. innominata, B. monnieri, B. rotundifolia
Synonyms Obolaria caroliniana, Hydrotrida caroliniana Gratiola repens, Macuillamia repens
Name authority (Walter) B. L. Robinson: Rhodora 10: 66. (1908) (Swartz) Wettstein: in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 67[IV,3b]: 76. (1891)
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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