stonewort

American  

[stohn-wurt, -wawrt] / ˈstoʊnˌwɜrt, -ˌwɔrt /

noun

1. any of a plantlike group of green algae constituting the class Charophyceae, having a jointed body frequently encrusted with lime and usually attached to the bottom in fresh water.

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stonewort British  

/ ˈstəʊnˌwɜːt /

noun

1. any of various green algae of the genus Chara, which grow in brackish or fresh water and have jointed fronds encrusted with lime

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Etymology

Origin of stonewort

First recorded in 1575–85; stone + wort ²

Example Sentences

About 5 percent of the state’s lakes are infested with species such as zebra mussels, Eurasian milfoil and starry stonewort.

From Washington Times • Jul. 9, 2017

Starry stonewort is an algae that forms thick mats and can clog boat motors.

From Washington Times • Jul. 9, 2017

Agency staff investigated and found starry stonewort in 53 acres of the lake.

From Washington Times • Aug. 29, 2015

Starry stonewort was first discovered in the U.S. in the St. Lawrence River in 1978 and has spread to lakes in the northeastern United States.

From Washington Times • Aug. 29, 2015

The agency said Friday that starry stonewort has been confirmed in Lake Koronis and Mud Lake, which is connected to Koronis, in Stearns and Meeker counties.

From Washington Times • Aug. 29, 2015