Flora of North America species comparison

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Bacopa repens

Bacopa eisenii

creeping water-hyssop

Gila River water-hyssop, western hydranthele
Habit Annuals or perennials. Perennials.
Stems

erect, 15–40 cm, hairy, glabrescent.

prostrate, 15–60 cm, hairy.
Leaves

hairy, glabrescent;

blade base narrowly cuneate, margins entire, apex rounded.

hairy;

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

1.5–15 mm.

17–51 mm.
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 to oblong, calyx bilaterally symmetric;

corolla white with yellow throat, 10–14 mm;

stamens 3, equal.
2n

= 28.

= 56.

Bacopa repens

Bacopa eisenii
Phenology Flowering Jul–Sep. Flowering May–Oct.
Habitat Muddy sites, pools, rice fields. Marshes, ponds, pools, wet soil, wet ditches, rice fields.
Elevation 0–100 m. (0–300 ft.) 30–1100 m. (100–3600 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
AZ; CA; NV
[BONAP county map]
Discussion

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. 263. FNA vol. 17, p. 262.
Parent taxa Plantaginaceae > Bacopa Plantaginaceae > Bacopa
Sibling taxa
B. caroliniana, B. egensis, B. eisenii, B. innominata, B. monnieri, B. rotundifolia
B. caroliniana, B. egensis, B. innominata, B. monnieri, B. repens, B. rotundifolia
Synonyms Gratiola repens, Macuillamia repens Ranapalus eisenii
Name authority (Swartz) Wettstein: in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 67[IV,3b]: 76. (1891) (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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