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Carricitos, Horsetail, Scouringrush (Equisetum hyemale)
My identification of this patch of horsetails to the species level is based on the presence of broad bands, including black and white ones, at the joints. You can see what I mean in the photo to the left. Uniform darkening of the broad band is also common.
Smooth Horsetail, Scouringrush (Equisetum laevigatum)