Everything about Isoetopsida totally explained
The
Isoetopsida is a class of the
Lycopodiophyta. All living plants belong to the genus
Isoetes in the order Isoetales. The order Isoetales is sometimes placed in the class Isoetopsida, sometimes in the Selaginellopsida or Lycopsida. There are about 140-150 species, with a
cosmopolitan distribution but often scarce to rare. Some
botanists split the genus, separating two South American species into the genus
Stylites.
The most famous group within the Isoetopsida is the "scale trees" (order
Lepidodendrales), which include
Lepidodendron. These massive trees flourished in marshlands of the
Carboniferous.
Quillworts are considered by some to be the last remnant of such
fossil trees, with which they share some unusual features including the development of both
wood and bark, a modified shoot system acting as roots, bipolar growth, and an upright stance.
Further Information
Get more info on 'Isoetopsida'.
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