Ceratophyllaceae是一种水生植物。其有趣的故事在于，它被认为是唯一一种没有根的种子植物。相反，它有许多细小的、树状的根状体，它们可以在水中自由地浮动。由于缺乏根部，它通常依靠水流中的营养物质来生长和繁殖。Ceratophyllaceae普遍在全球温带和热带地区的淡水中生长，不仅是一种独特的植物，也是对根系进化的重要研究对象。
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Short Description
Ceratophyllaceae is a cosmopolitan family of flowering plants including one living genus commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions. It is the only extant family in the order Ceratophyllales. Species are commonly called coontails or hornworts, although hornwort is also used for unrelated plants of the division Anthocerotophyta.
Living Ceratophyllum grows completely submerged, usually, though not always, floating on the surface, and does not tolerate drought.
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