Common Scouring-rush, Common Scouring-rush, Dutch Rush, Prairie Scouring-rush, Scouring-rush Horsetail,
Equisetum hyemale var. affine
Synonyms: Equisetum hyemale ssp. affine, Equisetum hyemale var. californicum, Equisetum praealtum
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.
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