© Robert Siegel
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Cactus

Order: Caryophyllales
Family: Cactaceae

Species on page

+ Hedgehog cactus (Echinopsis)
+ California barrel cactus (Ferocactus cylindraceus)
+ Beavertail cactus (Opuntia basilaris)
+ Golden barrel cactus (Echinocactus grusonii)
+ Lava cactus (Brachycereus nesioticus)
+ Silver torch or wooly torch (Cleistocactus strausii) - separate page
+ Cholla (Cylindropuntia)
+ Prickly pear (Opuntia)
+ Nightblooming Cereus (Peniocereus greggii)

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Hedgehog cactus (Echinopsis)

Cactus flower

arizona garden

Hedgehog cactus (Echinopsis)
Family: Cactaceae
Arizona Cactus Garden, Stanford
With Nature Through Photography class class
August 18, 2019
Canon 7Dmark2
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California barrel cactus (Ferocactus cylindraceus)

A barrel of fun

Anza Borrego
California barrel cactus (Ferocactus cylindraceus)
Family: Cactaceae (cactuses)
Anza Borrego
March 29, 2019
Canon 7Dmark2

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Beavertail cactus (Opuntia basilaris)

Anza Borrego
Beavertail cactus (Opuntia basilaris)
Family: Cactaceae (cactuses)
Anza Borrego
March 29, 2019
Canon 7Dmark2

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Silver torch or wooly torch (Cleistocactus strausii)

Cactus flower

arizona garden

Silver torch or wooly torch (Cleistocactus strausii)
Arizona Cactus Garden, Stanford
With Photographing Nature class
January 19, 2019
Canon 7Dmark2
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Cholla (Cylindropuntia)

Cholla

arizona garden

Cholla (Cylindropuntia)
Arizona Cactus Garden, Stanford
With Photographing Nature class
January 19, 2019
Canon 7Dmark2
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Golden barrel cactus (Echinocactus grusonii)

Barrel of fun

cactus

Golden barrel cactus (Echinocactus grusonii)
Family: Cactaceae
Arizona Cactus Garden
April 7, 2014
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Flowered barrel

cactus

Golden barrel cactus (Echinocactus grusonii)
Family: Cactaceae
Arizona Cactus Garden
April 7, 2014
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"Mother-in-law's cushion"

cactus

Golden barrel cactus (Echinocactus grusonii)
Family: Cactaceae
Arizona Cactus Garden
April 7, 2014
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cactus

Golden barrel cactus (Echinocactus grusonii)
Family: Cactaceae
Arizona Cactus Garden
April 7, 2014
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Prickly pear (Opuntia)

Prickly

santa cruz

Mission prickly-pear (Opuntia ficus-indica)
Family: Cactaceae
Chaminade, Santa Cruz
October 17, 2019

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Pear

santa cruz

Mission prickly-pear (Opuntia ficus-indica)
Family: Cactaceae
Chaminade, Santa Cruz
October 17, 2019

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cactus

Prickly pear (Opuntia)
Family: Cactaceae
Arizona Cactus Garden, Stanford
With Nature Through Photography class
August 21, 2016
Canon Rebel T5i
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cactus

Prickly pear (Opuntia)
Family: Cactaceae
Arizona Cactus Garden, Stanford
With Nature Through Photography class
August 21, 2016
Canon Rebel T5i
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Nightblooming Cereus (Peniocereus greggii)

Night blooming cactus

cactus
Nightblooming Cereus (Peniocereus greggii)
Family: Cactaceae
Night drive
Araras Lodge
The Pantanal
April 1, 2011
Canon rebel T1i

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Closer

cactus
Nightblooming Cereus (Peniocereus greggii)
Family: Cactaceae
Night drive
Araras Lodge
The Pantanal
April 1, 2011
Canon rebel T1i

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cactus
Nightblooming Cereus (Peniocereus greggii)
Family: Cactaceae
Night drive
Araras Lodge
The Pantanal
April 1, 2011
Canon rebel T1i

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Its bark is as bad as its bite

galapagos
Santa Cruz
Galápagos 2010
July, 2010

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Two tone

galapagos

Las Grietas, Santa Cruz
Galápagos 2010
July, 2010
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Lava cactus (Brachycereus nesioticus)

Lava cactus

galapagos

Lava cactus (Brachycereus nesioticus)
Galápagos 2010
July, 2010
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Barrels

cactus

Arizona Cactus Garden
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Prickly pear

cactus

Arizona Cactus Garden
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A sharper look

cactus

Arizona Cactus Garden
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Going about their beesness

arizona garden

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Radiant

arizona garden

Arizona Cactus Garden
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Cactus bud

arizona 
garden

Arizona Cactus Garden
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Cactus flowers

arizona 
garden

Arizona Cactus Garden
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Modified: October 18, 2019
Created: August 11, 2010
Contact: siegelr@stanford.edu
All pictures are protected by copyright. Do not use without permission.