Chara is an advanced form of algae often mistaken for a true aquatic plant due to its complex structure. It is best identified by its musky odor and gritty texture, which comes from calcium deposits on its surface. Unlike rooted plants, Chara attaches to the lake bottom but does not develop true roots. It can form dense underwater growths that cover large areas, providing habitat for fish and helping to stabilize sediments. While beneficial in moderation, excessive growth can reduce water flow, interfere with recreation, and require management to maintain a balanced aquatic ecosystem.