Pleuromeia
noun
Pleu·ro·me·ia
| \ plu̇ˈrōmēə\
Definition of Pleuromeia
: a genus of Triassic fossil plants that is included in Lepidodendrales or isolated in a separate order, has characters in common with the genera Sigillaria and Isoetes, and is marked by an unbranched trunk arising from an enlarged lobulated root-bearing base terminating in a crown of long ligulate leaves, and bearing heterosporous cones at its apex
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