Gratiola viscidulaGratiola viscidula originates from Northern America and is relatively new to the aquatic hobby. The somewhat thorny appearance of the submersed form makes it very distinct and easily recognizable. It is quite easy to grow and prefers good light. By regular trimming it can be kept very low, almost carpeting, but will also present itself well as a fore mid ground cushion plant. Each stem is approximately 1 2 cm wide and can become 10+ cm tall. The stem