Flora of North America species comparison

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Bacopa caroliniana

Bacopa eisenii

blue water-hyssop, lemon bacopa

Gila River water-hyssop, western hydranthele
Habit Perennials, aromatic. Perennials.
Stems

prostrate, 15–30 cm, hairy.

prostrate, 15–60 cm, hairy.
Leaves

hairy;

blade base broadly cuneate, margins entire, apex obtuse.

hairy;

blade base broadly cuneate to truncate, margins entire, apex rounded.
Pedicels

5–15 mm;

bracteoles present.

17–51 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 5, ovate to oblong, calyx bilaterally symmetric;

corolla white with yellow throat, 10–14 mm;

stamens 3, equal.
2n

= 56.

Bacopa caroliniana

Bacopa eisenii
Phenology Flowering Jun–Nov. Flowering May–Oct.
Habitat Marshes, swamps, margins of streams, pastures. Marshes, ponds, pools, wet soil, wet ditches, rice fields.
Elevation 0–300 m. (0–1000 ft.) 30–1100 m. (100–3600 ft.)
Distribution
from FNA
AL; FL; GA; LA; MD; MS; NC; SC; TX; VA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; NV
[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 eisenii was reported by T. H. Kearney and R. H. Peebles (1960) based on a specimen labeled B. rotundifolia at ARIZ.

(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. egensis, B. innominata, B. monnieri, B. repens, B. rotundifolia
Synonyms Obolaria caroliniana, Hydrotrida caroliniana Ranapalus eisenii
Name authority (Walter) B. L. Robinson: Rhodora 10: 66. (1908) (Kellogg) 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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