[The Horsetail Family West of the Cascade Mountains of Oregon and Washington]

Common Scouring-rush, Common Scouring-rush, Scouring-rush Horsetail, Dutch Rush, Prairie Scouring-rush

Equisetum hyemale var. affine

Fertile cone of Common Scouring-rush, Common Scouring-rush, Scouring-rush Horsetail, Dutch Rush, Prairie Scouring-rush: Equisetum hyemale var. affine

A close-up of the fertile stalk of common scouring-rush as seen along the Springwater Trail east of Palmblad Road to the east of Gresham, OR.............April , 2011. Note the apiculate (pointed cap) tip to the cone.

Joint on the stalk of Common Scouring-rush, Common Scouring-rush, Scouring-rush Horsetail, Dutch Rush, Prairie Scouring-rush: Equisetum hyemale var. affine

A close-up of a joint of common scouring-rush as seen along the Springwater Trail east of Palmblad Road to the east of Gresham, OR.............April , 2011. The sheath at the lower portion of the joint typically has a lower black band, then a lighter band, and then is topped with another blackish band (a characteristic of this species).

Paul Slichter