Stem Phloem of a Middle Pennsylvanian Lepidodendron

@article{Eggert1977StemPO,
  title={Stem Phloem of a Middle Pennsylvanian Lepidodendron},
  author={D. A. Eggert and N. Kanemoto},
  journal={Botanical Gazette},
  year={1977},
  volume={138},
  pages={102 - 111}
}
The distribution and histology of the primary phloem of a Middle Pennsylvanian Lepidodendron are described on the basis of five exceptionally well-preserved stems discovered in coal balls from southern Illinois. In transverse sections of developmentally young stems lacking secondary xylem, the phloem is present as a discontinuous ring of strands separated by intervening regions of parenchyma that accompany departing leaf traces. The phloem is separated from the primary xylem by a primary… Expand
Hapsidoxylon terpsichorum gen. et sp. nov., a stem with unusual anatomy from the Triassic of Antarctica.
Chaloneria Gen. Nov.; Heterosporous Lycophytes from the Pennsylvanian of North America
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