alder

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Plant seedlings emerging from rich fertile soil

Do Plants Feel Pain?

Flower bingo

Britannica’s Flower Bingo

Discover

Agnes with a lamb near her feet. St. Agnes (Saint Agnes) design drawing for stained glass window by J&R Lamb Studios, ink, mount size 10.5 x 14.5 in.

Roman Catholic Saints

Statue of Nostradamus

Nostradamus and His Prophecies

Space race (1957-1969) infographic between United States (U.S.) and Russia. America, Soviet Union, U.S.S.R., space exploration

Timeline of the Space Race, 1957–69

Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Candles Burning On Table In Church

What Is the Most Widely Practiced Religion in the World?

alder: Facts & Related Content

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

Facts

Also Known As	Alnus

Photos

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Topics

red alder white alder speckled alder European alder American green alder Betuleae deciduous tree poplar birch teak chestnut oak maple ash beech buckeye elm

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

Spreading oak tree in summer. (green, leaves, deciduous, shade)

Trees: Giants Holding the Sky

Field of baobab trees, Madagascar. (bottle tree)

Trees of the World

Demystified

Plant seedlings emerging from rich fertile soil

Do Plants Feel Pain?