might be field horsetail but not sure. Along a gravel road access road through the forest for the natural gas people. There was a small forest of the horsetails in this area.
Covering the small shores of the creek that runs through Ravenna Park, this prehistoric-looking species is prone to swampy, moist conditions and prefers a wet habitat. They grow in dense clusters of green, jointed, hallow stalks and having both a sporing stage and a fruiting stage. During the sporing stage they are topped with a small spore cone which is the fruiting body.
A field of these in the marsh area along the banks of Lake Washington. Fertile and sterile stems were found.
They are still very small, and are almost all less than 8-10 inches, I wonder how much taller they will grow!