Identification: What plant is this?

No leaves, grows singly or in bunches in sandy soil. Found near the Columbia River at Portland OR.

Picture is life size, I scanned it in a document scanner.

 

Looks like Equisetum sp. Possibly Equisetum fluviatile common name Water horsetail.

http://en.wikipedia.org/wiki/Equisetum_fluviatile

http://www.nature-diary.co.uk/nn-images/0505/050512-equisetum-fluviatile.jpg

 

Might also be Rough Horsetail Equisetum hyemale.

 

Thanks! Water horsetail. I've been watching these for years and one has never been bulbous like the pic of Rough Horsetail.