Bacopa Serpyllifolia (Sp.) Japan Bunch

Bacopa serpyllifolia is a South American species new to the North American aquarium hobby. Like similar species, it inhabits the margins of drying pools, growing submerged in the rainy season and flowering as the water recedes. Sold as Bacopa sp. ‘Japan’, it likely acquired that trade name merely by being imported from or popularized there. There are apparently not even any Bacopaspecies native to that country, and those of the Asian mainland are distinctly dissimilar. At present, it is only available in the United States through trade with other hobbyists.