Definition of "stonewort" []

• Any of various submerged aquatic algae of the genus Chara that are frequently encrusted with calcium carbonate deposits and have nodes with whorled, filamentlike branches. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "With regard to suitable plants for comparatively deep water in ponds or lakes, lakewort and stonewort grow on the bottom, and do not, as a rule, attain any considerable height."
• "Predation from visually hunting fish is thus likely to be much more intense in the stonewort habitat than in the reed, due to higher densities of perch in the novel habitat"
• "Linear regression between endurance and speed for individuals from the reed and the stonewort."