Bacopa is a genus of 70 - 100 aquatic plants belonging to the family Plantaginaceae. It is commonly known as Waterhyssop (or Water Hyssop, though this is more misleading as Bacopa is not very closely related to hyssop but simply has a somewhat similar habitus).
Habitat and range
Bacopa species are found in tropical and subtropical regions of the world, particularly the Americas. A few are regarded as weeds and excess stock should not be dumped in warmer regions. Most grow in moist amphibious conditions, though some like B. myriophylloides seem to be wholly aquatic.
B. monnieri syn. Herpestis monniera, is important in ayurvedic medicine and has been used, particularly in India, for several thousand years.
Some of these species are commonly used in freshwater aquariums and around and in ponds in warmer climes. Most are easy to grow and are slow-growing, but require medium to high amounts of light. Most are easy to grow and will tolerate a wide range of water conditions. B. caroliniana at least will tolerate brackish water. Plants are usually best planted in groups in the middle to background. Algal infestation can be a problem in brighter lighting conditions.
* Bacopa australis
Formerly placed here
* Mecardonia procumbens (Mill.) Small (as B. procumbens (Mill.) Greenm.)
1. ^ "Genus: Bacopa Aubl.". Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?1218. Retrieved 2011-01-18.
Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License