Equisetaceae

Description

Terrestrial herbs, usually of wet places, sometimes as agricultural weeds. Leaves small, whorled, laterally connected into a toothed, tubular to funnel-form sheath.

Taxonomy

One genus with 15 species. Relict group with long fossil history. Cosmopolitan except Australia, New Zealand, and Antarctica.

Synonymy

Equisetaceae A.P. DC. in Lam. & DC., Fl. Franç., ed. 3, 2: 580. 1805