equisetaceous

== English == === Etymology === Equisetaceae +‎ -ous === Adjective === equisetaceous (not comparable) (botany) Belonging to the Equisetaceae, or horsetails. === References === “equisetaceous”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.