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Table of Contents

Introduction References & Edit History Quick Facts & Related Topics

Images

Arrowhead (Sagittaria).

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Flower bingo

Britannica’s Flower Bingo

Plant seedlings emerging from rich fertile soil

Do Plants Feel Pain?

Discover

Shadow of a man holding large knife in his hand inside of some dark, spooky buiding

7 of History's Most Notorious Serial Killers

Poker game. Card game. Royal Flush in poker. Hearts suit gambling

Poker Hands Ranked

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

Berries and leaves of the bittersweet nightshade (Solanum dulcamara) plant. Poisonous plant

7 of the World’s Deadliest Plants

Internet http://www blue screen. Hompepage blog 2009, history and society, media news television, crowd opinion protest, In the News 2009, breaking news

Who Invented the Internet?

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

Drinking water is poured into a glass.

Water Fluoridation: Just the Facts

arrowhead: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	Sagittaria

Photos

Arrowhead (Sagittaria).

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Topics

Sagittaria platyphylla grass-leaved arrowhead Sagittaria sagittifolia broadleaf arrowhead aquatic plant Alismataceae burhead water plantain Hydrocleys

Quiz

Venus's-flytrap. Venus's-flytrap (Dionaea muscipula) one of the best known of the meat-eating plants. Carnivorous plant, Venus flytrap, Venus fly trap

Plants: From Cute to Carnivorous

Demystified

Plant seedlings emerging from rich fertile soil

Do Plants Feel Pain?