Links to genera Ferns and Horsetails (Monilophytes) Clubmosses and Quillworts (Lycophytes)
|
| Equisetum | Horsetails
Stems jointed, green, hollow, simple or branched at nodes; branches similar to stems but smaller. Leaves simple, very small, in whorls fused at their bases to form sheaths at nodes; sporangia in cones, which in some species are formed on tips of normal stems (occasionally on side branches), in others on separate unbranched non-green shoots, produced earlier in the season.
23 species, worldwide except for Australia and New Zealand; 8 species in Britain and Ireland; One species introduced (?) and naturalised although presumed to be formerly native.
* indicates introduced species.
| |
|
|
