Equisetum L.


Latin equus - horse, seta - bristle; in reference to the horse-tail like branchlets.

Terrestrial or aquatic plants. Stems long-creeping below ground, above ground they are hollow and grooved, divided into distinct units by joints (nodes). Branches arranged in whorls. Leaves many, reduced and tooth-like in regular whorls at the nodes and united into a sheath at the base. Sporangia in stalked organs (sporangiophores) that are clustered into a terminal cone-like structure.

c. 15 species of almost world-wide distribution but mostly temperate Northern Hemisphere; notably absent from Australia and New Zealand.

Hauke (1963, 1978).

Source: Spencer, R. (1995). Equisetaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 1, Ferns, conifers & their allies. The identification of garden and cultivated plants. University of New South Wales Press.

Hero image
kingdom Plantae
phylum   Tracheophyta
class    Equisetopsida
order     Equisetales
family      Equisetaceae
Higher taxa
Subordinate taxa
species        Equisetum arvense L.
species        Equisetum hyemale L.
species        Equisetum scirpoides Michx.