Flora of North America species comparison

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Bacopa repens

Bacopa caroliniana

creeping water-hyssop

blue water-hyssop, lemon bacopa
Habit Annuals or perennials. Perennials, aromatic.
Stems

erect, 15–40 cm, hairy, glabrescent.

prostrate, 15–30 cm, hairy.
Leaves

hairy, glabrescent;

blade base narrowly cuneate, margins entire, apex rounded.

hairy;

blade base broadly cuneate, margins entire, apex obtuse.
Pedicels

1.5–15 mm.

5–15 mm;

bracteoles present.
Flowers

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.

sepals 5, ovate, calyx bilaterally symmetric;

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

stamens 2–4, didynamous.
2n

= 28.

Bacopa repens

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