© Robert Siegel
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Snakes

Año Nuevo

Garters of the environnment

sf garter

San Francisco garter snake
Thamnophis sirtalis tetrataenia

There are an estimated 1000 to 2000 of this endangered subspecies. On this outing, we spotted four of them in two groups of two.

Etymology: the genus name is derived from the Greek roots thamnos for bush and ophio for snake.
"Sirtalis" is derived from the Latin for garter and apparently refers to the dorsal stripe(s).
The subspecies name is derived from the Greek roots tetra for four and taenia for ribbon.
The latter is also a genus of tapeworm including several human pathogens.

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Another view

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Young gopher snake

Pacific gopher snake
Pituophis catenifer catenifer

Etymology: Pituophis - Greek: Pitys - pine, ophios - serpent
Catenifer - chain bearing

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Crotalus

Rattled

jasper
Crotalus oreganus oreganus
Jasper Ridge Biological Preserve
April 23, 2011
Tilden Park docents walk

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Poison pattern

jasper
April 23, 2011
Tilden Park docents walk

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Lingual sensor

jasper
April 23, 2011
Tilden Park docents walk

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Bi-lingual

rattlesnake
April 23, 2011
Tilden Park docents walk

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Close enough to determine pupil shape

rattlesnake
April 23, 2011
Tilden Park docents walk

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Rattlesnake at the Dish

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Briza maxima - Rattlesnake grass
The Stanford Dish

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I got forked at the dish

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Madagascar

Boa pattern

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India

Charming

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Charmed

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The Stanford Dish

On the road again.

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I just can't wait to get on the road again.

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Tanzania

Snake eye

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Notice the photographer in the snake's eye!


snakeeye

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modified: March 22, 2014
created: November 25, 2006
Contact: siegelr@stanford.edu