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Pleuromeia

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Pleuromeia 

a genus of extinct arborescent plants of the division Lycopodiophyta. The erect, nonbranching stem, which measured up to 1–2 m in height and 10 cm in diameter, ended in a strobile with sporangia. At the base of the stem was a tuberous rhizophore, from which rootlets emerged. Traces of scars from fallen leaves were preserved on the bark. The Pleu-romeia existed in the Early Triassic and died out in the Middle Triassic. They probably descended from Late Paleozoic Sigil-lariaceae.



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The microspores of Pleuromeia rossica Neuburg (Lycopsida; Triassic): comparative ultrastructure and phylogenetic implications.
2] uptake from the sediment, as suggested by the similarity in lacunal volume between Isogtes roots and fossil roots of the extinct Stigmaria (Karrfalt, 1980) and Pleuromeia (Munster) Corda (Grauvogel-Stamm, 1993), and this in mm would have favored the evolution of CAM (Osmond, 1984).
 
 
 
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