Flora of North America species comparison

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Bacopa innominata

Bacopa caroliniana

tropical water-hyssop

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

prostrate, 8–14 cm, hairy.

prostrate, 15–30 cm, hairy.
Leaves

hairy;

blade base ± truncate, margins entire, apex rounded.

hairy;

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

6–10 mm.

5–15 mm;

bracteoles present.
Flowers

sepals 5, ovate to oblong, calyx bilaterally symmetric;

corolla white with white throat, 2–5 mm;

stamens 2–4, equal.

sepals 5, ovate, calyx bilaterally symmetric;

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

stamens 2–4, didynamous.

Bacopa innominata

Bacopa caroliniana
Phenology Flowering Jun–Sep. Flowering Jun–Nov.
Habitat Marshy areas, alluvial deposits along streams, wet ditches, muddy shores and banks. Marshes, swamps, margins of streams, pastures.
Elevation 0–200 m. (0–700 ft.) 0–300 m. (0–1000 ft.)
Distribution
from FNA
FL; GA; MD; NC; SC; VA
[BONAP county map]
from FNA
AL; FL; GA; LA; MD; MS; NC; SC; TX; VA
[WildflowerSearch map]
[BONAP county map]
Discussion

Bacopa innominata differs from B. rotundifolia in having corollas entirely white; B. rotundifolia has corollas with yellow throats.

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

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. monnieri, B. repens, B. rotundifolia
B. egensis, B. eisenii, B. innominata, B. monnieri, B. repens, B. rotundifolia
Synonyms Conobea innominata, B. cyclophylla, B. stragula, Herpestis rotundifolia Obolaria caroliniana, Hydrotrida caroliniana
Name authority (M. Gómez) Alain: Revista Soc. Cub. Bot. 13: 61. (1957) (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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