June 2012. A message from Sri Lanka about a weed from a mangrove swamp in the northern part of the country. The writer wanted to confirm whether the weed in question was Najas marina? Also, some idea on how to control it was requested.

A member wrote the following:

The photo does not show anywhere near enough detail. Submerged aquatics can be tricky and probably should not be identified from photos. If possible, the contributor should arrange for a specimen to be identified at the Sri Lanka National Herbarium (http://www.botanicgardens.gov.lk/herbarium/). Some clear and close-up photographs of the plant might also help.