Answer:
Psilotum.
Explanation:
Psilotum is also known as whisk fern, it is a fern like vascular plants genus. This plant is found in tropical areas, and more temperate areas. Plants of this genus lack true leaves, and roots (they are anchored by creeping rhizomes).
The stem of Psilotum contains many branches with paired enations (like small leaves) but they do not have vascular tissues. By the fusion of three sporangia, above the enations synangia formed, and produced the spores.
