Equisetum x mackaii (Newman) Brichan
Family: Equisetaceae
MacKay's horsetail
[Equisetum hyemale subsp. trachyodon L.,  more]
Equisetum x mackaii image
Michael A. Rosenthal  
Etymology: Equisetum: Latin for "horsetail" from equus, "horse," and seta, "bristle"
Plants: perennial fern ally
Habitat: shores and sands
Conservation Status: Native
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