Psilotum nudum, known as the skeleton fork fern, is a fernlike plant in the order Psilotales, it lacks roots. Psilotum nudum is considered a 'primitive' plant – a descendent of possibly the first group of vascular plants which were widespread during the Devonian and Silurian periods.

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Photo credit: © World History Archive / Alamy / Afripics
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Keywords: archival, archive, botany, devonian, fern, ferns, fork, historical, history, nudum, order, plant, plants, primitive, psilotales, psilotum, roots, silurian, skeleton, vascular