From: en:Image:Equisetum arvense stem.jpg Equisetum braunii stem photographed by Eric Guinther (Marshman at en.wikipedia) in Portland, Oregon (near zoo) on...
DescriptionEquisetum braunii (stems), Portland, Oregon.jpg Equisetum braunii (syn. E. telmateia subsp. braunii) vegetative and reproductive stems in Portland, Oregon...