Lyginopteris is a genus of Late Carboniferous seed fern stems with a very distinctive outer cortex of sclereids forming a pattern in cross section like Roman numerals on a clock face, often called a Sparganum cortex. Some Lyginopteris were parasitized by water molds, such as the Combresomyces.[1]

References

  1. ^ Strullu-Derrien, C.; Kenrick, P.; Rioult, J. P.; Strullu, D. G. (2010). "Evidence of parasitic Oomycetes (Peronosporomycetes) infecting the stem cortex of the Carboniferous seed fern Lyginopteris oldhamia". Proceedings of the Royal Society B: Biological Sciences. 278 (1706): 675–680. doi:10.1098/rspb.2010.1603. PMC 3030852. PMID 20843846.


Allikas: http://en.wikipedia.org/wiki/Lyginopteris
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